Lu Zihang, Chen Zheng
Department of Biostatistics School of Public Health and Tropical Medicine Southern Medical University Guangzhou, China SickKids Research Institute Hospital for Sick Children Toronto, ON, Canada Department of Biostatistics School of Public Health and Tropical Medicine Southern Medical University Guangzhou, China
Epidemiology. 2015 Mar;26(2):e26-7. doi: 10.1097/EDE.0000000000000258.