Sjogren's Syndrome

• Wallace Rheumatic Study Center — Beverly Hills, California, United States
• Denver Arthritis Clinic — Denver, Colorado, United States
• Ochsner Clinic Foundation — Baton Rouge, Louisiana, United States
• John Hopkins Bayview Medical Center — Baltimore, Maryland, United States

Not specified

• National Institutes of Health Clinical Center, 9000 Rockville Pike — Bethesda, Maryland, United States

• Duke University Medical Center — Durham, North Carolina, United States
• University of Pennsylvania — Philadelphia, Pennsylvania, United States

• Michigan Cornea Consultants, P.C. — Southfield, Michigan, United States

• Centre for Contact Lens Research, University of Waterloo — Waterloo, Ontario, Canada

• Seoul National Unversity Hospital — Seoul, South Korea

Not specified

• Eyecare of La Jolla — La Jolla, California, United States
• UCLA — Los Angeles, California, United States
• Opticare — Waterbury, Connecticut, United States
• Brandon Eye Clinic — Tampa, Florida, United States

• Toronto — Toronto, Canada
• Waterloo — Waterloo, Canada