The full report is titled “Both Tadalafil and Dexamethasone May Reduce the Incidence of High-Altitude Pulmonary Edema. A Randomized Trial.” It is in the 3 October 2006 issue of Annals of Internal Medicine (volume 145, pages 497-506). The authors are M. Maggiorini, H.-P. Brunner-La Rocca, S. Peth, M. Fischler, T. Böhm, A. Bernheim, S. Kiencke, K.E. Bloch, C. Dehnert, R. Naeije, T. Lehmann, P. Bärtsch, and H. Mairbäurl.