1. Guang An Men Hospital of China Academy of Chinese Traditional Medicine; Acupuncture Department; No. 5 Bei Xian Ge Xuan Wu Qu Beijing China 100053
2. China Academy of Traditional Chinese Medicine; No. 17 Bei Xing Cang Dong Zhi Men Nei Beijing China 100700
3. Chinese Academy of Traditional Chinese Medicine; Department of Acupuncture and Moxibustion; Guang An Men Hospital No. 5, Beixiange Street Beijing Xuanwu District China 100053
4. University of Ottawa; Centre for Global Health, Institute of Population Health; 1 Stewart Street, Room 206 Ottawa Ontario Canada K1N 6N5
5. West China Hospital, Sichuan University; Chinese Cochrane Centre, Chinese Clinical Trial Registry, Chinese Evidence-Based Medicine Centre, INCLEN Resource and Training Centre; No. 37, Guo Xue Xiang Chengdu Sichuan China 610041
6. University of Auckland; Obstetrics and Gynaecology; FMHS Grafton Campus Park Road Auckland New Zealand 1
7. The University of Western Sydney; Centre for Complementary Medicine Research; Locked Bag 1797 Penrith South DC New South Wales Australia 1797