Clara Menéndez, Cleofé Romagosa, Mamudo R Ismail, Carla Carrilho, Francisco Saute, Nafissa Osman, Fernanda Machungo, Azucena Bardaji, Llorenç Quintó, Alfredo Mayor, Denise Naniche, Carlota Dobaño, Pedro L Alonso, Jaume Ordi
PLoS Med. 2008 February; 5(2): e44. Published online 2008 February 19. doi: 10.1371/journal.pmed.0050044