Förger F, Vallbracht I, Helmke K, Villiger P, Ostensen M. Pregnancy mediated improvement of rheumatoid arthritis. Swiss Med Wkly [Internet]. 2012 Jul. 15 [cited 2024 Jun. 16];142(2930):w13644. Available from: https://smw.ch/index.php/smw/article/view/1527