Prevalence of depression, anxiety and stress and associated workplace stressors among healthcare workers in a tertiary hospital in Vietnam: A cross-sectional study - Hoang-Phuong Nguyen; Thao Thi Phuong Nguyen; Ngoc Quang Nguyen; Thang Van Bui; Hai Anh Le; Van Thanh Hoang; Thanh Liem Nguyen (PLoS ONE, 2026)