David Gathara, Newton Opiyo, John Wagai, Stephen Ntoburi, Philip Ayieko, Charles Opondo, Annah Wamae, Santau Migiro, Wycliffe Mogoa, Aggrey Wasunna, Fred Were, Grace Irimu, Mike English
BMC Health Serv Res. 2011; 11: 307. Published online 2011 November 11. doi: 10.1186/1472-6963-11-307