Kojo Yeboah-Antwi, Portipher Pilingana, William B. Macleod, Katherine Semrau, Kazungu Siazeele, Penelope Kalesha, Busiku Hamainza, Phil Seidenberg, Arthur Mazimba, Lora Sabin, Karen Kamholz, Donald M. Thea, Davidson H. Hamer
PLoS Med. 2010 September; 7(9): e1000340. Published online 2010 September 21. doi: 10.1371/journal.pmed.1000340