TY - STAND AU - DGGG; DGU; BGRM TI - Fertility preservation for patients with malignant disease. Guideline of the DGGG, DRU and BGRM (S2k – Level, AWMF Registry No. 015/082, November 2017). 2017 N1 - last access: 15.02.2018 UR - http://www.ammf.org/leitlinien/detail/II/015-082.html ER -