Quantitation of human immunodeficiency virus type 1 viral load in plasma using reverse transcriptase activity assay at a district hospital laboratory in Botswana: A decentralization pilot study - Mine, Madisa; Bedi, Keabetswe; Maruta, Talkmore; Madziva, Dignity; Tau, Modiri; Zana, Tatenda; Gaolathe, Tendani; Moyo, Sikhulile; Seipone, Khumo; Ndwapi, Ndwapi; Essex, Max; Marlink, Richard (Journal of Virological Methods, 2009)