RT Journal Article SR Electronic T1 Acquired von Willebrand syndrome in children with patent ductus arteriosus JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 87 OP 88 DO 10.1136/heart.88.1.87 VO 88 IS 1 A1 R Rauch A1 U Budde A1 A Koch A1 M Girisch A1 M Hofbeck YR 2002 UL http://heart.bmj.com/content/88/1/87.abstract AB