1. Department of Epidemiology and Biostatistics; School of Public Health, Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
2. Key Laboratory of Environment and Health; Tongji Medical College; Huazhong University of Science and Technology; Ministry of Education & Ministry of Environmental Protection; Wuhan China
3. Department of Health Care; Bao'an Maternal and Child Health Hospital; Shenzhen China
4. Institute of Orthopaedics; the First Affiliated Hospital of Chinese PLA General Hospial; Beijing China
5. Brigham and Women's Hospital; Channing Division of Network Medicine; Boston Massachusetts