TY - RPRT TI - Investigating unexplained infertility. AU - C B Coulam AU - S B Moore AU - W O'Fallon PY - 1988 DO - 10.1016/0002-9378(88)90370-5 UR - https://pubmed.ncbi.nlm.nih.gov/3289396/ ID - 3289396 ER -