1. Naval Medical Research Center Detachment, Lima, Peru
2. Clínica San Borja, Lima, Peru
3. Naval Environmental and Preventive Medicine Unit Two, Norfolk, Virginia
4. Hospital Arzobispo Loayza, Lima, Peru
5. Hospital Nacional Daniel Alcides Carrión, Callao, Peru
6. Centro Médico Naval Cirujano Mayor Santiago Távara, Callao, Peru
7. Naval Medical Research Center, Silver Spring, Maryland