00301nam a2200133Ia 4500008004100000022001200041041000800053082001000061100001700071245003800088260001900126300001500145440000700160240112s2017    xx            000 0 und d  a8898545  aeng  a618.2  aNICHALSEN W.  aOBSTETRICS AND GYNECOLOGY CLINICS  bELSEVIERc2017  a321-522c3  v44