1. Recurrent miscarriage: diagnostic and therapeutic procedures. Guideline of the DGGG, OEGGG and SGGG (S2k-Level, AWMF Registry Number 015/050);Toth;Geburtshilfe Frauenheilkd,2018
2. Evaluation and treatment of recurrent pregnancy loss: a committee opinion;Fertil Steril,2012
3. ESHRE guideline: recurrent pregnancy loss;Bender Atik;Hum Reprod Open,2018
4. Regan L, Backos M, Rai R. The investigation and treatment of couples with recurrent first-trimester and second-trimester miscarriage. Royal College of Obstetricians and Gynaecologists. Green-top Guideline No. 17, 2011.
5. Primary vs. secondary recurrent pregnancy loss—epidemiological characteristics, etiology, and next pregnancy outcome;Shapira;J Perinat Med,2012