About the Authors

Bach Xuan Tran

bach@hmu.edu.vn

Affiliations Institute for Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Vietnam, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Long Hoang Nguyen

Affiliations Institute for Preventive Medicine and Public Health, Hanoi Medical University, Hanoi, Vietnam, School of Medicine and Pharmacy, Vietnam National University, Hanoi, Vietnam

Huong Thu Thi Phan

Affiliation Authority of HIV/AIDS Control, Ministry of Health, Hanoi, Vietnam

Carl A. Latkin

Affiliation Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BXT HTP CL. Performed the experiments: BXT HTP CL LHN. Analyzed the data: BXT LHN. Contributed reagents/materials/analysis tools: BXT HTP CL LHN. Wrote the paper: BXT CL LHN.