authors Zhang, Hongzhou Allen, John Wu, Qinghua Leiner, Tim Zhong, Liang Angela S. Koh, MBBS, MPH Leng, Shuang Gao, Fei Kovalik, Jean-Paul Tan, Ru-San Wee, Hai Ning Chua, Kee Voon Ching, Jianhong Zhao, Xiaodan