Does maternal obesity increase the risk of fetal abnormalities? Analysis of 20 248 newborn infants of the Mainz Birth Register for detecting congenital abnormalities. - Queisser-Luft,A.; Kieninger-Baum,D.; Menger,H.; Stolz,G.; Schlaefer,K.; Merz,E. (Ultraschall Med, 1998)