May 20, 2012
World Autoimmune Arthritis Day
Worldwide observance
United States
May 20, 2013
World Autoimmune Arthritis Day
Worldwide observance
United States
May 20, 2014
World Autoimmune Arthritis Day
Worldwide observance
United States
May 20, 2015
World Autoimmune Arthritis Day
Worldwide observance
United States
May 20, 2016
World Autoimmune Arthritis Day
Worldwide observance
United States
May 20, 2017
World Autoimmune Arthritis Day
Worldwide observance
United States
May 20, 2018
World Autoimmune Arthritis Day
Worldwide observance
United States