00481nas a2200169   4500000000100000000000100001008004100002100001100043700001400054700002500068700001600093700001200109245015600121300001300277490000700290022001400297       2013                            d1 aE. Hak1 aB. Mulder1 aC. Schuiling-Veninga1 aT. de Vries1 aS. Jick00aUse of acid-suppressive drugs in pregnancy and the risk of childhood asthma: bidirectional crossover study using the general practice research database  a1097-1040 v36  a0114-5916