My 13 years of mountain climbing are documented in this book: Aconcagua, Ama Dablam, Tocclaraju, and many other mountains. The reason for writing this book is to give my fellow climbers and hikers more knowledge about the art of acclimatization and how to stay alive while climbing in the mountains. I have witnessed too many unnecessary deaths from altitude sickness during my climbs.

Besides being a climber, I am also a doctor and served as an expedition doctor for most of my climbs. We managed well with all our climbs and did not lose anybody from our group.