Tesfahuneygn Gebrehiwet, Gebreegziabher Gebremichael, Evaluation of an External Quality Assessment Program for HIV Testing in Tigray North Ethiopia 2016, Journal of Clinical Research In HIV AIDS And Prevention, Volume 3, Issue 2, 2017, Pages 1-8, ISSN 2324-7339, https://doi.org/10.14302/issn.2324-7339.jcrhap-17-1679. (http://oap-journals.infojcrhap/article/631) Keywords: human immunodeficiency; HIV Testing points and External Quality Assurance