Macular Degeneration   428 studies
Macular Edema   173 studies
Malabsorption Syndromes   52 studies
Malaria   327 studies
Malaria, Cerebral   8 studies
Malaria, Falciparum   142 studies
Malaria, Vivax   14 studies
Malformations of Cortical Development   16 studies
Malignant astrocytoma   7 studies
Malignant Carcinoid Syndrome   35 studies
Malignant fibrous histiocytoma   44 studies
Malignant germ cell tumor   44 studies
Malignant Hyperthermia   1 study
Malignant mesenchymal tumor   630 studies
Malignant mixed Mullerian tumor   4 studies
Malnutrition   308 studies
Malocclusion   8 studies
Malocclusion, Angle Class II   1 study
Malocclusion, Angle Class III   1 study
Mandibular Injuries   1 study
Mannosidase Deficiency Diseases   5 studies
Mansonelliasis   3 studies
Mantle cell lymphoma   612 studies
Marburg hemorrhagic fever   1 study
Marburg Virus Disease   1 study
Marchiafava-Micheli disease   20 studies
Marfan Syndrome   10 studies
Marijuana Abuse   106 studies
Marijuana Smoking   11 studies
Mast cell disease   24 studies
Mastitis   4 studies
Mastocytoma   24 studies
Mastocytosis   24 studies
Mastocytosis, Cutaneous   3 studies
Mastocytosis, Systemic   13 studies
Mastoiditis   2 studies
MAT deficiency   1 study
Maxillary Diseases   1 study
Maxillary Sinusitis   7 studies
Maxillofacial Abnormalities   19 studies
Maxillofacial Injuries   4 studies
McCune Albright syndrome   11 studies
Measles   61 studies
Meconium Aspiration Syndrome   7 studies
Mediastinal Diseases   8 studies
Mediastinal Neoplasms   3 studies
Mediastinitis   4 studies
Medulloblastoma   151 studies
Melanoma   746 studies
Melanoma of the choroid   55 studies
Melanoma, familial   31 studies
Melanosis   20 studies
MELAS Syndrome   2 studies
Melioidosis   1 study
Membranoproliferative glomerulonephritis (type 2)   1 study
Membranous nephropathy, idiopathic   14 studies
Memory Disorders   47 studies
Meniere Disease   6 studies
Meningeal Neoplasms   34 studies
Meningioma   101 studies
Meningitis   125 studies
Meningitis, Bacterial   34 studies
Meningitis, Cryptococcal   21 studies
Meningitis, Fungal   22 studies
Meningitis, Haemophilus   3 studies
Meningitis, Meningococcal   33 studies
Meningitis, Pneumococcal   2 studies
Meningocele   3 studies
Meningococcal Infections   93 studies
Meningococcemia   8 studies
Meningomyelocele   4 studies
Menkes Kinky Hair Syndrome   2 studies
Menkes syndrome   2 studies
Menopause   338 studies
Menopause, Premature   8 studies
Menorrhagia   33 studies
Menstruation Disturbances   102 studies
Mental Disorders   6171 studies
Mental Disorders Diagnosed in Childhood   566 studies
Mental Fatigue   2 studies
Mental Retardation   118 studies
Mercury Poisoning   1 study
Merkel cell cancer   6 studies
Mesothelioma   126 studies
Metabolic Diseases   4408 studies
Metabolic disorder   4408 studies
Metabolic Syndrome X   96 studies
Metabolism, Inborn Errors   458 studies
Metachromatic leukodystrophy   10 studies
Metaplasia   190 studies
Metastatic squamous neck cancer with occult primary   114 studies
Methylmalonic acidemia   1 study
Metrorrhagia   22 studies
Mevalonate Kinase Deficiency   1 study
Mevalonic aciduria   1 study
Microcephaly   2 studies
Microencephaly   2 studies
Microphthalmia   3 studies
Microphthalmos   3 studies
Microsatellite Instability   4 studies
Microscopic polyangiitis   16 studies
Microsporidiosis   1 study
Microvascular Angina   5 studies
Migraine Disorders   225 studies
Migraine with Aura   22 studies
Migraine without Aura   19 studies
Milk Hypersensitivity   13 studies
Mineralocorticoid Excess Syndrome, Apparent   1 study
Miosis   3 studies
Mitochondrial Diseases   27 studies
Mitochondrial Myopathies   4 studies
Mitochondrial neurogastrointestinal encephalopathy syndrome   3 studies
Mitochondrial trifunctional protein deficiency   1 study
Mitral Valve Insufficiency   38 studies
Mitral Valve Prolapse   18 studies
Mitral Valve Stenosis   4 studies
Mixed Connective Tissue Disease   4 studies
Mixed Tumor, Mullerian   4 studies
Miyoshi myopathy   1 study
Mobility Limitation   7 studies
Molluscum Contagiosum   1 study
Mondini Dysplasia   1 study
Monkeypox   2 studies
Monoclonal Gammopathies, Benign   5 studies
Monoclonal gammopathy of undetermined significance   59 studies
Mononeuropathies   48 studies
Monosomy   4 studies
Monosomy X   31 studies
Mood Disorders   1552 studies
Morphine Dependence   2 studies
Morquio syndrome   2 studies
Motion Sickness   3 studies
Motor neuro-ophthalmic disorders   45 studies
Motor Neuron Disease   167 studies
Motor neuropathy   6 studies
Motor Skills Disorders   1 study
Mouth Breathing   1 study
Mouth Diseases   400 studies
Mouth Neoplasms   80 studies
Mouth, Edentulous   18 studies
Movement Disorders   719 studies
Moyamoya Disease   1 study
Moyamoya disease 1   1 study
Muckle-Wells syndrome   5 studies
Mucocutaneous Lymph Node Syndrome   9 studies
Mucolipidoses   4 studies
Mucopolysaccharidoses   31 studies
Mucopolysaccharidosis I   20 studies
Mucopolysaccharidosis II   7 studies
Mucopolysaccharidosis IV   2 studies
Mucopolysaccharidosis type 6   4 studies
Mucopolysaccharidosis VI   9 studies
Mucopolysaccharidosis VII   1 study
Mucormycosis   2 studies
Mucositis   88 studies
Muenke Syndrome   1 study
Multi-centric Castleman’s Disease   5 studies
Multicystic Dysplastic Kidney   1 study
Multifocal choroiditis   2 studies
Multiple Chemical Sensitivity   2 studies
Multiple Endocrine Neoplasia   10 studies
Multiple hereditary exostoses   3 studies
Multiple Myeloma   905 studies
Multiple Organ Failure   19 studies
Multiple Sclerosis   359 studies
Multiple Sclerosis, Chronic Progressive   18 studies
Multiple Sclerosis, Relapsing-Remitting   111 studies
Multiple System Atrophy   25 studies
Multiple system atrophy (MSA) with orthostatic hypotension   7 studies
Multiple Trauma   14 studies
Mumps   40 studies
Muscle Cramp   25 studies
Muscle Hypertonia   53 studies
Muscle Hypotonia   8 studies
Muscle Rigidity   18 studies
Muscle Spasticity   75 studies
Muscle Weakness   30 studies
Muscular Atrophy   41 studies
Muscular Atrophy, Spinal   20 studies
Muscular Diseases   427 studies
Muscular Disorders, Atrophic   56 studies
Muscular Dystrophies   50 studies
Muscular Dystrophies, Limb-Girdle   4 studies
Muscular Dystrophy, Duchenne   27 studies
Muscular dystrophy, Duchenne and Becker type   26 studies
Muscular Dystrophy, Facioscapulohumeral   5 studies
Muscular Dystrophy, Oculopharyngeal   2 studies
Musculoskeletal Abnormalities   62 studies
Musculoskeletal Diseases   2963 studies
Mutism   3 studies
Myalgic encephalomyelitis   20 studies
Myasthenia Gravis   16 studies
Myasthenic Syndromes, Congenital   1 study
Mycobacterium avium complex infection   45 studies
Mycobacterium avium-intracellulare Infection   45 studies
Mycobacterium Infections   303 studies
Mycobacterium Infections, Atypical   51 studies
Mycoplasma Infections   8 studies
Mycoplasmal pneumonia   5 studies
Mycoses   666 studies
Mycosis Fungoides   312 studies
Mydriasis   7 studies
Myelitis   63 studies
Myelitis, Transverse   7 studies
Myelodysplasia   801 studies
Myelodysplastic Syndromes   801 studies
Myelodysplastic-Myeloproliferative Diseases   227 studies
Myelofibrosis   251 studies
Myelofibrosis-osteosclerosis   60 studies
Myeloid Metaplasia   251 studies
Myeloproliferative Disorders   729 studies
Myocardial Infarction   567 studies
Myocardial Ischemia   1832 studies
Myocardial Reperfusion Injury   3 studies
Myocardial Stunning   3 studies
Myocarditis   6 studies
Myoclonic Epilepsies, Progressive   5 studies
Myoclonus   17 studies
Myoclonus epilepsy   8 studies
Myofascial Pain Syndromes   189 studies
Myofibroma   66 studies
Myoglobinuria   1 study
Myoma   7 studies
Myopathies, Nemaline   1 study
Myopathies, Structural, Congenital   1 study
Myopathy, myotubular   1 study
Myopia   110 studies
Myopia, Degenerative   3 studies
Myopia, severe   9 studies
Myositis   36 studies
Myositis, Inclusion Body   8 studies
Myotonia   5 studies
Myotonia atrophica   17 studies
Myotonia Congenita   2 studies
Myotonic Disorders   9 studies
Myotonic Dystrophy   17 studies
Myxoid liposarcoma   1 study