Xiya Ma1, Nicole Lin2, John Marinos3, Dominique Vervoort4. 1. Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada. Electronic address: xiyama.xm@gmail.com. 2. Miller School of Medicine, University of Miami, Miami, FL, USA. 3. Faculty of Medicine and Health Sciences, University of Sherbrooke, Sherbrooke, Quebec, Canada. 4. Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.