H. Lee Moffitt Cancer Center and Research Institute   147 studies
H. Lundbeck A/S   79 studies
H:S Laegeambulance   1 study
Haag Streit USA   1 study
Hacettepe University   6 studies
Hackensack University Medical Center   11 studies
Hadassah Medical Organization   252 studies
Haelan Products, Inc.   1 study
Haematology Service,University Hospital of Salamanca, MªConsuelo del Cañizo F...   1 study
HaEmek Medical Center, Israel   61 studies
Haemonetics Corporation   1 study
Haffkine Bio-Pharmaceutical Corporation Ltd.   1 study
HAL Allergy   1 study
Halcygen Pharmaceuticals Limited   1 study
Halcyon Hill Foundation   5 studies
Hallym University Medical Center   8 studies
Halmstad County Hospital   1 study
Halozyme Therapeutics   15 studies
Hamad Medical Corporation   2 studies
Hamamatsu University   22 studies
HamesNet Research Network   1 study
Hamilton Children's Aid Society   2 studies
Hamilton Health Sciences   142 studies
Hammersmith Hospitals NHS Trust   7 studies
Hana Biosciences, Inc   10 studies
Hand and Upper Limb Clinic, Canada   1 study
Handok Pharmaceuticals Co., Ltd.   5 studies
Hangzhou Jiuyuan Gene Engineering Co. Ltd.,   1 study
Hanita Lenses   1 study
Hannover Clinical Trial Center GmbH   2 studies
Hannover Medical School   41 studies
Hanoi Medical University   3 studies
Hanyang University   3 studies
Harbin Medical University   3 studies
Harbinger Medical, Inc.   1 study
Harbor Medical Inc.   1 study
Harborview Injury Prevention and Research Center   3 studies
Harran University   1 study
Harras Pharma Curarina GmbH   1 study
Harrison Clinical Research   1 study
Hartford Hospital   13 studies
Harvard Pilgrim Health Care   6 studies
Harvard School of Public Health   34 studies
Harvard University   30 studies
Harvard Vanguard Medical Associates   6 studies
Harvest Technologies   3 studies
Haukeland University Hospital   36 studies
Haukeland University Hospital, Dept of neck and back diseases   1 study
Haute Ecole Cantonale Vaudoise de Santé   2 studies
Hawaii Biotech, Inc.   1 study
Hawaii Community Foundation   2 studies
Hawaii Pacific Health   3 studies
Hawler Medical University   1 study
Haydarpasa Numune State Hospital   1 study
HDH Medical Ltd   1 study
Head and Neck Surgery Associates   1 study
HealOr   1 study
Health & Life Sciences University, Tryol   1 study
Health Center of the City of Joensuu   1 study
Health Decisions   2 studies
Health Dialog Analytic Solutions, Inc.   1 study
Health Effects Institute   1 study
Health Enhancement Products, Inc.   3 studies
Health Ever Bio-Tech Ltd.   1 study
Health Foundation of South Florida   2 studies
Health Promotion Board, Singapore   1 study
Health Protection Agency   14 studies
Health Research Association   2 studies
Health Sciences Centre Foundation, Manitoba   2 studies
Health Service of Andalucia   1 study
Health, Canada   10 studies
Healthcare Providers Direct, Inc.   1 study
HealthCore, Inc.   1 study
HealthEast Care System   1 study
HealthPartners Research Foundation   9 studies
Healthpoint   9 studies
Healthsystem Plus   1 study
HealthWatchSystems, Inc.   1 study
Healthways, Inc.   1 study
Heart and Diabetes Center North-Rhine Westfalia   3 studies
Heart and Stroke Foundation of BC & Yukon   2 studies
Heart Care Foundation   3 studies
Heart Center Bad Krozingen   3 studies
Heart Centre Rotenburg   4 studies
Heart of England NHS Trust   2 studies
Heartcenter, University Medical Center St. Radboud   1 study
Hearthstone Alzheimer Care   1 study
Heartscape Technologies, Inc.   1 study
HeartWare, Inc.   1 study
Hebei Medical University   4 studies
Hebrew University of Jerusalem   7 studies
Heffter Research Institute   2 studies
Heidelberg Metasystems GmbH   1 study
Heinrich-Heine University, Duesseldorf   34 studies
Helen DeVos Children's Hospital   5 studies
Helicor   1 study
Helios Klinik Ambrock   1 study
Helix Medical Systems   1 study
Hellenic Atherosclerosis Society   3 studies
Hellenic Breast Surgeons Society   3 studies
Hellenic Cooperative Oncology Group   3 studies
Hellenic Oncology Research Group   38 studies
Helse Fonna   4 studies
Helse Nord   3 studies
Helsinki University   36 studies
Helsinn Healthcare SA   3 studies
HEM Research   1 study
HemaQuest Pharmaceuticals Inc.   3 studies
Hematology and Oncology Associates of NE Pennsylvania   1 study
Hematology and Oncology Specialists   1 study
Hematology Oncology Consultants   1 study
HemCon Medical Technologies, Inc   2 studies
Hemispherx Biopharma   6 studies
Hemosol   1 study
HenKan Pharmaceutical Co., Ltd.   1 study
Hennepin County Medical Center - Minneapolis   3 studies
Henogen   7 studies
Henri Mondor University Hospital   2 studies
Henry Ford Health System   26 studies
Henry Ford Hospital   4 studies
Henry M Jackson Foundation   5 studies
Hepasense   1 study
Hepasome Pharmaceuticals   1 study
Hepatitis Resource Network   3 studies
Heppe Foundation   1 study
Herbert Irving Comprehensive Cancer Center   41 studies
Heritage Medical Research Institute   1 study
Herlev Hospital   29 studies
Hermann Eye Center   3 studies
Hermano Miguel Foundation   2 studies
Herning Hospital   5 studies
Herz-Kreislauf-Zentrum Segeberger Kliniken GmbH   1 study
Herz-Zentrums Bad Krozingen   3 studies
Herzliya Medical Center   1 study
Herzog Hospital   19 studies
Herzzentrum Goettingen   2 studies
Hill-Rom   11 studies
Hillel Yaffe Medical Center   29 studies
Hillerod Hospital, Denmark   11 studies
Hippocration General Hospital   4 studies
Hiroshima University   5 studies
Hisamitsu Pharmaceutical Co., Inc.   4 studies
Hispanic AIDS Forum, Inc.   1 study
Histiocyte Society   1 study
Histogenics Corporation   1 study
HIV Prevention Trials Network   2 studies
HIV Vaccine Trials Network   11 studies
Hoag Memorial Hospital Presbyterian   6 studies
Hoechst Marion Roussel   7 studies
Hoersholm Hospital   1 study
Hoffmann-La Roche   711 studies
Hokkaido Gastrointestinal Cancer Study Group   12 studies
Hokkaido University Hospital   9 studies
Hokuriku-Kinki Immunochemotherapy Study Group   1 study
Holden Comprehensive Cancer Center   2 studies
Hollis-Eden Pharmaceuticals   6 studies
Hologic   7 studies
Holstebro Hospital   32 studies
Hong Kong Academy of Medicine   1 study
Hong Kong Baptist University   3 studies
Hong Kong Eye Hospital   2 studies
Hong Kong Nasopharyngeal Cancer Study Group Limited   4 studies
Hong Kong University of Science and Technology   1 study
Hoosier Oncology Group   32 studies
HopeLab Foundation   1 study
Hopital A Michallon   1 study
Hopital Antoine Beclere   4 studies
Hopital Foch   13 studies
Hopital Jean Minjoz   1 study
Hopital La Rabta   1 study
Hopital Lariboisière   4 studies
Horizon Therapeutics, Inc.   3 studies
Hormone Laboratory, Aker University Hospital, Oslo, Norway   1 study
Hormos Medical   3 studies
Hormozgan University of Medical Sciences   1 study
Hospices Civils de Lyon   65 studies
Hospira, Inc.   18 studies
Hospital Arnau de Vilanova   2 studies
Hospital Authority, Hong Kong   54 studies
Hospital Avicenne   1 study
Hospital Britanico   1 study
Hospital Carlos III, Madrid   2 studies
Hospital Centre Biel/Bienne   1 study
Hospital Clinic of Barcelona   60 studies
Hospital Clinico Universitario de Santiago   3 studies
Hospital Clinico Universitario San Cecilio   3 studies
Hospital Cruz Roja Mexicana   1 study
Hospital das Clinicas de Porto Alegre, Porto Alegre, Brasil   1 study
Hospital de Base   5 studies
Hospital de Calella   1 study
Hospital de Cancer de Barretos - Fundacao Pio XII   2 studies
Hospital de Clinicas de Porto Alegre   29 studies
Hospital de Concentracion Norte de Petroleos   1 study
Hospital de Cruces   2 studies
Hospital de Granollers   1 study
Hospital de Niños R. Gutierrez de Buenos Aires   2 studies
Hospital de Olhos Sadalla Amin Ghanem   1 study
Hospital de Reabilitação de Anomalias Craniofaciais (HRAC) - Brazil   1 study
Hospital de Sabadell   2 studies
Hospital de Viladecans   1 study
Hospital District of Southwestern Finland   1 study
Hospital do Cancer, Sao Paulo   2 studies
Hospital do Coracao   2 studies
Hospital Espirita de Porto Alegre   1 study
Hospital Felicio Rocho   1 study
Hospital for Children and Adolescents, Finland   2 studies
Hospital for Special Surgery, New York   23 studies
Hospital General de Mexico   1 study
Hospital General de Requena   1 study
Hospital General Universitario Gregorio Marañon   4 studies
Hospital Grosshansdorf   1 study
Hospital Hietzing   6 studies
Hospital Infantil Cândido Fontoura   1 study
Hospital Israelita Albert Einstein   1 study
Hospital JP Garrahan   2 studies
Hospital Juan Canalejo   2 studies
Hospital Mateo Orfila   2 studies
Hospital Miguel Servet   1 study
Hospital Militar de Santiago   1 study
Hospital Militar del General Luis Felipe Brieba Aran   1 study
Hospital Moinhos de Vento   1 study
Hospital Mutua de Terrassa   1 study
Hospital of Navarra   2 studies
Hospital Oftalmologico de Sorocaba   1 study
Hospital Pablo Tobón Uribe   1 study
Hospital Pedro Hispano   1 study
Hospital Pompeia   1 study
Hospital Principe de Asturias   3 studies
Hospital Privado de Cordoba, Argentina   1 study
Hospital Privado del Sur   1 study
Hospital San Carlos, Madrid   7 studies
Hospital Santa Fe   1 study
Hospital Sao Domingos   2 studies
Hospital Severo Ochoa   1 study
Hospital Son Llatzer   1 study
Hospital St. Joseph, Marseille, France   1 study
Hospital St. Justine   3 studies
Hospital Sultanah Aminah Johor Bahru   1 study
Hospital Universitari de Bellvitge   6 studies
Hospital Universitari Joan XXIII de Tarragona.   2 studies
Hospital Universitari Son Dureta   4 studies
Hospital Universitari Vall d'Hebron Research Institute   1 study
Hospital Universitario 12 de Octubre   2 studies
Hospital Universitario Central de Asturias   1 study
Hospital Universitario de Canarias   2 studies
Hospital Universitario Dr. Jose E. Gonzalez   3 studies
Hospital Universitario Fundación Alcorcón.   1 study
Hospital Universitario La Paz   3 studies
Hospital Universitario Pedro Ernesto   1 study
Hospital Universitario Ramon y Cajal   4 studies
Hospital Universitario Reina Sofia   1 study
Hospital Universitario Virgen de la Arrixaca   2 studies
Hospital University Vall d'Hebron   6 studies
Hospital Universitário Professor Edgard Santos   2 studies
Hospital Virgen de la Luz   1 study
Hospital Virgen de la Salud   2 studies
Hospital Vozandez   1 study
Hospitales Universitarios Virgen del Rocío   5 studies
HOSPITEN   1 study
Hotchkiss Brain Institute, University of Calgary   1 study
Hotel Dieu Hospital   4 studies
House Ear Institute   2 studies
Hovedstadens Sygehusfaelesskab   1 study
HOVON - Dutch Haemato-Oncology Association   3 studies
Howard University   4 studies
Hoya Surgical Optics, Inc.   1 study
HP Therapeutics Foundation   2 studies
HPC Healthcare, Inc.   1 study
HRA Pharma   3 studies
HRSA/Maternal and Child Health Bureau   17 studies
HSK Wiesbaden   1 study
Huazhong University of Science and Technology   7 studies
Hubei Xinhua Hospital   1 study
Hubert H. Humphrey Cancer Center   1 study
Hull and East Yorkshire Hospitals NHS Trust   4 studies
Human Engineering Research Laboratories   1 study
Human Genome Center, Institute of Medical Science, University of Tokyo   27 studies
Human Genome Sciences   24 studies
Human Locomotion Science   1 study
Human Service Center, Illinois   1 study
Humanetics Corporation   2 studies
Humanis Klinikum Niederosterreich   1 study
Humax Pharmaceutical   1 study
Humboldt-Universität zu Berlin   11 studies
Hunan Mental Hospital   1 study
Hunter and New England Health   2 studies
Hunter Colorectal Research   1 study
Hunter Holmes Mcguire Veteran Affairs Medical Center   5 studies
Hunter-Fleming Ltd   1 study
Huntington Medical Research Institutes   1 study
Huntington Study Group   6 studies
Huntsman Cancer Institute   1 study
Hutchinson Technology Inc   3 studies
Hutchison Medipharma Limited   2 studies
Hvidovre University Hospital   66 studies
HydroCision, Inc.   1 study
Hyogo College of Medicine   1 study
Hyperion Therapeutics, Inc.   2 studies
HyperMed, Inc   4 studies
Hypo-Safe A/S   1 study
Hypoglycaemia Research Group   1 study
Hôpital Ambroise Paré   3 studies
Hôpital Necker-Enfants Malades   4 studies
Hölmich, Per, M.D.   1 study