TY - EJOUR T1 - Fetal lung maturity assessment by a modified A650 determination AU - Koszalka, Michael F. AU - Blomquist, Charles H. AU - Lakatua, David J. PY - 1986 LA - und PB - Kooperation de Gruyter JO - Journal of Perinatal Medicine - Official Journal of the WAPM DO - 10.1515/jpme.1986.14.1.35 ER -