1 College of Health Sciences, VinUniversity, Hanoi, 100000, Viet Nam. Electronic address: quan.nk@vinuni.edu.vn.
2 College of Health Sciences, VinUniversity, Hanoi, 100000, Viet Nam; Center for Global Health, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA. Electronic address: andrew.tr@vinuni.edu.vn.