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Patent foramen ovale - Symptoms & causes - Mayo Clinic
Patent foramen ovale - Diagnosis & treatment - Mayo Clinic
Patent Foramen Ovale: Symptoms, Diagnosis, and Treatments - Healthline
Patent Foramen Ovale (PFO): Symptoms, Causes & Treatment - Cleveland Clinic
Patent Foramen Ovale (PFO) | American Heart Association
Patent Foramen Ovale | Johns Hopkins Medicine
Foramen ovale (heart) - Wikipedia
OVALE definition | Cambridge Dictionary
Patent foramen ovale - UpToDate
Anatomy, Thorax, Heart Foramen Ovale - StatPearls - NCBI Bookshelf