1. Department of Epidemiology and Biostatistics, Sichuan University West China School of Public Health, Chengdu, Sichuan, China (mainland)
2. Department of Anorectal Surgery, Changhai Hospital of Shanghai, Shanghai, China (mainland)
3. School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China (mainland)
4. Department of Neurorehabilitation, Shanghai Second Rehabilitation Hospital, Shanghai, China (mainland)