[NEGATIVE BIOLOGICAL PREGNANCY TESTS IN THE MID-PERIOD OF PREGNANCY].
D004958:Estradiol; D004964:Estriol; D004970:Estrone; D005260:Female; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D011247:Pregnancy; D011258:Pregnancy Tests; D011276:Pregnanediol; D011374:Progesterone; D014556:Urine
D004970:Estrone; D011374:Progesterone; D004958:Estradiol; D004964:Estriol; D011276:Pregnanediol
ESTRADIOL; ESTRIOL; ESTRONE; HEMAGGLUTINATION INHIBITION TESTS; PREGNANCY TESTS; PREGNANEDIOL; PROGESTERONE; URINE
NEGATIVE BIOLOGISCHE SCHWANGERSCHAFTSTESTE IM MITTLEREN DRITTEL EINER SCHWANGERSCHAFT.