Preprint Article Version 1 This version is not peer-reviewed Version 1 : Received: 19 July 2024 / Approved: 19 July 2024 / Online: 19 July 2024 (15:19:23 CEST) Vu, B. N.; Green, K. E.; Tran, M. H.; Nguyen, H. M.; Do, K. T.; Nguyen, K. T.; Phan, H. T. T.; Tran, L. T. H.; Tran, A. K.; Le, G. T.; Pham, C. V.; Granger, K.; Nguyen, A. L. T.; Tran, L. K. Effectiveness of Hepatitis C Virus Self-Testing Service Delivery Models among People Who Inject Drugs: A Cross-Sectional Study in Vietnam. Preprints 2024, 2024071615.