Point-of-care CD4 technology invalid result rates in public health care settings across five countries. oleh Katherine Lamp, Seth McGovern, Youyi Fong, Biruhtesfa Abere, Adisu Kebede, Gonfa Ayana, Achamyeleh Mulugeta, Chares Diko Atem, Jean Bosco Elat Nfetam, Divine Nzuobontane, Timothy Bollinger, Ilesh Jani, Nadia Sitoe, Charles Kiyaga, George Senyama, Phibeon Munyaradzi Mangwendeza, Sekesai Mtapuri-Zinyowera, Jilian A Sacks, Naoko Doi, Trevor F Peter, Lara Vojnov