Affiliation: | (1) Division of Global Health (IHCAR), Department of Public Health Sciences, Karolinska Institutet, Nobels v?g 9, 171 77 Stockholm, Sweden;(2) Vietnam Cuba Friendship Hospital, 37 Hai Ba Trung street, Hanoi, Vietnam;(3) Department of Medical Microbiology, Hanoi Medical University, 1 Ton That Tung street, Hanoi, Vietnam;(4) Clinical Laboratories, National Institute of Infectious and Tropical Diseases, 78 Giai Phong street, Hanoi, Vietnam;(5) Nordic School of Public Health, Box 12133, SE-402 42 Gothenburg, Sweden;(6) Department of Probability and Statistics, Institute of Mathematics, 18 Hoang Quoc Viet road, Hanoi, Vietnam;(7) Public Health Faculty, Hanoi Medical University, 1 Ton That Tung street, Hanoi, Vietnam |