TY - JOUR TI - Endocrinology of in-vitro fertilization pregnancies during the first trimester T2 - Human Reproduction VL - 8 IS - 2 SP - 316 EP - 322 AU - Johnson, M.R. and Riddle, A.F. and Grudzinskas, J.G. and Sharma, V. and Campbell, S. and Collins, W.P. and Lightman, S.L. and Mason, B. and Nicolaides, K.H. PB - Oxford University Press (OUP) PY - 1993 PY - 1993 LA - English SN - 1460-2350 SN - 0268-1161 UR - http://dx.doi.org/10.1093/oxfordjournals.humrep.a138043 UR - https://katalog.ub.uni-leipzig.de/Record/ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTA5My9veGZvcmRqb3VybmFscy5odW1yZXAuYTEzODA0Mw ER -