by Eskes, Martine, Waelput, Adja J M, Erwich, Jan Jaap H M, Brouwers, Hens A A, Ravelli, Anita C J, Achterberg, Peter W, Merkus, Hans (J) M W M, Bruinse, Hein W
Published in BMJ open (14.10.2014)

by Zusterzeel, Petra L.M, Visser, Willy, Peters, Wilbert H.M, Merkus, Hans W.M.J, Nelen, Willianne L.D.M, Steegers, Eric A.P
Published in Obstetrics and gynecology (New York. 1953) (01.07.2000)

by ZUSTERZEEL, PETRA L. M., VISSER, WILLY, PETERS, WILBERT H. M., MERKUS, HANS W. M. J., NELEN, WILLIANNE L. D. M., STEEGERS, ERIC A. P.
Published in Obstetrics and gynecology (New York. 1953) (01.07.2000)