Characteristics and attitudes of women in relation to chosen fertility preservation techniques - a prospective, multicenter questionnaire-based study - von Wolff, M; Giesecke, D; Germeyer, A; Lawrenz, B; Henes, M; Nawroth, F; Friebel, S; Rohde, A; Giesecke, P; Denschlag, D (Eur J Obstet Gynecol Reprod Biol, 2016)