25(OH)VitD and human endocrine and functional fertility parameters in women undergoing IVF/ICSI oleh Mei Tian, Suimin Zeng, Sufen Cai, Sufen Cai, Christoph Reichetzeder, Xiaoli Zhang, Xiaoli Zhang, Chenjun Yin, Weihong Kuang, Kexin Cheng, Yao Jiang, Mingqiu Tao, Yuan Zeng, Ge Lin, Ge Lin, Ge Lin, Jian Li, Fei Gong, Fei Gong, Fei Gong, Berthold Hocher, Berthold Hocher, Berthold Hocher, Berthold Hocher