2ND TRIMESTER MATERNAL SERUM HUMAN CHORIONIC-GONADOTROPIN AND UNCONJUGATED ESTRIOL LEVELS IN BLACKS AND WHITES
Letter
SIMPSON, JL, ELIAS, S, MORGAN, CD et al. (1990). 2ND TRIMESTER MATERNAL SERUM HUMAN CHORIONIC-GONADOTROPIN AND UNCONJUGATED ESTRIOL LEVELS IN BLACKS AND WHITES
. LANCET, 335(8703), 1459-1460. 10.1016/0140-6736(90)91485-S
SIMPSON, JL, ELIAS, S, MORGAN, CD et al. (1990). 2ND TRIMESTER MATERNAL SERUM HUMAN CHORIONIC-GONADOTROPIN AND UNCONJUGATED ESTRIOL LEVELS IN BLACKS AND WHITES
. LANCET, 335(8703), 1459-1460. 10.1016/0140-6736(90)91485-S