-
U.S Department of Health and Human Services. 2019. USA. -
Autoimmune Association. USA. -
Autoimmune Association. USA. -
National Institute of Arthritis and Musculoskeletal and Skin Diseases. 2016. USA. -
Medline Plus. 2020. USA. -
JueÂbin Huang. Merck Manuel. 2020. USA.