title: On call I had a heart attack about five years ago, but I have no symptoms now. I am planning a vacation where I will be spending several days over 8,000 feet. Do I need to take any precautions?
authors.forename: William
authors.initials: W
authors.lastname: Kormos
mesh_terms: D005528:Foot; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D009203:Myocardial Infarction