RT Article T1 Maternal drug use and the timing of prenatal care JF Journal of health care for the poor and underserved VO 14 IS 4 SP 588 OP 607 A1 Brady, Thomas M A1 Burns, Allison M A1 Feder, Moshe A1 Visscher, Wendy A2 Burns, Allison M A2 Feder, Moshe A2 Visscher, Wendy LA English YR 2003 UL https://krimdok.uni-tuebingen.de/Record/191261734X DO 10.1353/hpu.2010.0700