by Lemmens, Karin M M, Nieboer, Anna P, Rutten-Van Mölken, Maureen P M H, van Schayck, Constant P, Asin, Javier D, Dirven, Jos A M, Huijsman, Robbert
Published in BMC health services research (26.03.2010)

by Asin, Javier D., Nahorst, Rohan R., Thijs, Carel T., Assendelft, Willem J., Hooi, Brunegilda R.
Published in American journal of obstetrics and gynecology (01.08.1993)