title: Patent foramen ovale in high-altitude pulmonary edema: a vicious cycle.
authors: Tsung O
authors: TO
authors: Cheng
mesh_terms: D000531:Altitude; D000532:Altitude Sickness / Q000175:diagnosis / Q000453:epidemiology*; D021721:Balloon Occlusion / Q000009:adverse effects* / Q000379:methods; D005260:Female; D054092:Foramen Ovale, Patent / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy*; D006801:Humans; D015994:Incidence; D008297:Male; D011379:Prognosis; D011654:Pulmonary Edema / Q000175:diagnosis / Q000453:epidemiology*; D018570:Risk Assessment; D012720:Severity of Illness Index