Modified letrozole vs GnRH antagonist protocols in ovarian aging women for IVF: an open-label, multicenter, randomized controlled trial

Y Yang Zhao S Shuyun Zhao J Jiawen Xu J Jingbo Chen Y Yun Lin Y Yuhong Peng X Xuemei Li (RIKEN Center for Brain Science) P Ping Pan J Jing Shu X Xiaojia Li J Jie Wang (State Key Laboratory of Molecular Oncology, Beijing Key Laboratory, CAMS Key Laboratory of Translational Research on Lung Cancer, Department of Medical Oncology Cancer Hospital, Chinese Academy of Medical Sciences Beijing China) C Chu Chu (Institute of Stem Cell and Neural Regeneration, School of Pharmacy, Nanjing Medical University) R Rui Hu Y Yiqi Yu Y Yunting Zhang S Saif Ur Rehman G Guanghui Dong D Dongzi Yang R Ricardo Azziz B Ben W. Mol Y Yankai Xia X Xiaomiao Zhao