1. Hackett P. (2001). High altitude and common medical conditions. In: High Altitude: An Exploration of Human Adaptation. T. Hornbein and R. Schoene, eds. Marcel Dekker, New York; pp. 839-886.
2. Hultgren H.N. (1997). High Altitude Medicine. Hultgren Publications, Stanford, CA; pp. 33-63.