Abstract
Zimmermann, R; Vetter, K
Zimmermann, R (corresponding author), Univ Spital Zurich, Klin Geburtshilfe, CH-8091 Zurich, Switzerland.; Vetter, K (corresponding author), Friedrichshaller Str 7c, D-14199 Berlin, Germany.
GYNAKOLOGE, 2020; 53 (12): 798