1. High altitude pulmonary edema;Hultgren;Medicine,1961
2. High altitude medical problems;Hultgren;West J Med,1979
3. Mountain sickness: Prevention, recognition, and treatment;Hackett,1980
4. Positive end-expiratory pressure in adult respiratory failure;Weisman;N Engl J Med,1982
5. Positive expiratory pressure for the treatment of high-altitude oedema;Feldman;Lancet,1977