1. Ince-Askan H, Dolhain RJ (2015) Pregnancy and rheumatoid arthritis. Best Pract Res Clin Rheumatol 29:580–596
2. Wallenius M, Skomsvoll JF, Irgens LM, Salvesen KÅ, Nordvåg BY, Koldingsnes W, Mikkelsen K, Kaufmann C, Kvien TK (2011) Fertility in women with chronic inflammatory arthritides. Rheumatology 50:1162–1167
3. Hench PS (1938) The ameliorating effect of pregnancy on chronic atrophic (infectious rheumatoid) arthritis, fibrositis and intermittent hydrarthritis. Mayo Clin Proc 13:161–167
4. de Man YA, Dolhain RJ, van de Geijn FE, Willemsen SP, Hazes JM (2008) Disease activity of rheumatoid arthritis during pregnancy: results from a nationwide prospective study. Arthritis Rheum 15(59):1241–1248
5. Barrett JH, Brennan P, Fiddler M, Silman AJ (1999) Does rheumatoid arthritis remit during pregnancy and relapse postpartum? Results from a nationwide study in the United Kingdom performed prospectively from late pregnancy. Arthritis Rheum 42:1219–1227