1. Chakravarty E.F., Nelson L., Krishnan E. Obstetric hospitalizations in the United States for women with systemic lupus erythematosus and rheumatoid arthritis. Arthritis Rheum. 2006. Vol. 54(3). P. 899-907.

2. Chambers C.D., Johnson D.L., Robinson L.K. Birth outcomes in women who have taken leflunomide during pregnancy. Arthritis Rheum. 2010. Vol. 62. P. 1494-503.

3. Chambers C.D., Koren G., Tutuncu Z.N., Johnson D., Jones K.L. Are new agents used to treat rheu-matoid arthritis safe to take during pregnancy?. Can. Fam. Physician. 2007. Vol. 53(3). P. 409-412.

4. Chambers C.D., Tutuncu Z.N., Johnson D., Jones K.L. Human pregnancy safety for agents used to treat rheumatoid arthritis: adequacy of available information and strategies for developing post-marketing data. Arthritis Res. Ther. 2006. Vol. 8(4). P. 215.

5. Häupl T., ØStensen M., Grützkau A. Reactivation of rheumatoid arthritis after pregnancy: Increased phagocyte and recurring lymphocyte gene activity. Arthritis Rheumatism. 2008. Vol. 58. P. 2981-2992.

6. Keeling S.O., Oswald A.E. Pregnancy and rheumatic disease: “by the book” or “by the doc”. Clin. Rheumatol. 2009. Vol. 28(1). P. 1-9.

7. de Man Y.A., Bakker-Jonges L.E., Goorbergh C.M. Women with rheumatoid arthritis negative for anti-cyclic citrullinated peptide and rheumatoid factor are more likely to improve during pregnancy, whereas in autoantibody-positive women autoantibody levels are not influenced by pregnancy. Ann. Rheum. Dis. 2010. Vol. 69. P. 420-423.

8. de Man Y.A., Hazes J.M., van der Heide H. Association of higher rheumatoid arthritis disease activity during pregnancy with lower birth weight: results of a national prospective study. Arthritis Rheum. 2009. Vol.60. P. 3196-206.

9. de Man Y.A., Dolhain R.J., van de Geijn F.E., Willemsen S.P., Hazes J.M. Disease activity of rheu-matoid arthritis during pregnancy: results from a nationwide prospective study. Arthritis Rheumatism. 2008. Vol. 59(9). P. 1241-1248.

10. Martinez Lopez J.A., Loza E., Carmona L. Systematic review on the safety of methotrexate in rheu-matoid arthritis regarding the reproductive system (fertility, pregnancy, and breastfeeding). Clin. Exp. Rheuma-tol. 2009. Vol. 27. P. 678-84.

11. Mitchell K., Kaul M., Clowse M.E.B. The management of rheumatic diseases in pregnancy. Scand. J. Rheumatol. 2010. Vol. 39(2). P. 99-108.

12. Ostensen M., Forger F. Treatment with biologics of pregnant patients with rheumatic diseases. Curr. Opin. Rheumatol. 2011. Vol. 23(3). P. 293-298.

13. Ostensen M., Brucato A., Carp H., Chambers C. Pregnancy and reproduction in autoimmune rheumatic diseases. Rheumatol. (Oxford). 2011. Vol. 50(4). P. 657-664.

14. Ostensen M., Villiger P.M. The remission of rheumatoid arthritis during pregnancy. Semin. Immu-nopathol. 2007. Vol. 29. P. 185-191.

15. Skomsvoll J.F., Wallenius M., Koksvik H.S. Drug insight: anti-tumor necrosis factor therapy for in-flammatory arthropathies during reproduction, pregnancy and lactation. Nat. Clin. Pract. Rheumatol. 2007. Vol. 3. P. 156-164.

16. Winger E.E., Reed J.L. Was risk properly assessed in Carter, et al’s safety assessment of tumor necro-sis factor antagonists during pregnancy?. J. Rheumatol. 2009. Vol. 36. P. 2122.