National Jewish Health
1400 Jackson St
Denver, CO  80206
(877) 225-5654 (Toll Free)
(303) 355-5864

University of California at Los Angeles Medical Center
UCLA Occupational & Environmental Medicine
10833 Le Conte Ave
Los Angeles, CA  90095-3075
(310) 825-4321

Harborview Medical Center
325 Ninth Ave
Seattle, WA  98104-2499
(206) 744-3000

University of Pennsylvania Health System 
854 BRB II/III
421 Curie Blvd
Philadelphia, PA  19104-6160
(215) 349-8455

The Cleveland Clinic
9500 Euclid Ave
Cleveland, OH  44195
(800) 223-2273 (Toll Free)
(216) 444-4508

East Tennessee Pulmonary Associates
800 Oak Ridge Turnpike
Jackson Plaza – Suite C-200
Oak Ridge, TN  37830
(865) 483-3594

University of California, San Francisco
San Francisco General Hospital
1001 Potrero Ave
Building 30, Suite 3500
San Francisco, CA  94110
(415) 206-5427

University of Iowa Hospitals and Clinics
200 Hawkins Drive
Iowa City, IA  52242
(319) 356-8486