Rexhai, Emrush, Urs Scherrer, and Stefano F Rimoldi. 2016. “Patent Foramen Ovale: A Novel Cardiovascular Risk Factor in Patients With Sleep Disordered Breathing and High Altitude Dwellers?”. Swiss Medical Weekly 146 (4344):w14371. https://doi.org/10.4414/smw.2016.14371.