TY - GEN AU - KANDRAC,M TI - [Reduction of progesterone in the organism. I. Pregnenolone and its differentiation from other ketosteroids] SN - 0008-7335 PY - 2003///0501 KW - Female KW - Humans KW - Ketosteroids KW - Pregnancy KW - urine KW - Pregnenolone KW - Progesterone KW - Steroids KW - Urine N1 - Publication Type: Journal Article ER -