The authors apologise for errors in the affiliations listed in their article published in the May 2018 issue of this journal (Vol 155 Iss 5 pages 423–432). The corrected author list and affiliations are published below:
Xiao-Bo Wang1,*, Qian-Rong Qi1,*, Kai-Lin Wu2 and Qing-Zhen Xie1
1Center for Reproductive Medicine, Renmin Hospital of Wuhan University, Wuhan, People’s Republic of China and 2Medical College of Wuhan University, Wuhan, People’s Republic of China