title: PFO closure, when the going gets tough ...
authors.forename: Bernhard
authors.initials: B
authors.lastname: Meier
mesh_terms: D006328:Cardiac Catheterization / Q000295:instrumentation; D002404:Catheterization / Q000295:instrumentation*; D004452:Echocardiography / Q000379:methods; D004868:Equipment Failure; D006344:Heart Septal Defects, Atrial / Q000000981:diagnostic imaging / Q000628:therapy*; D006801:Humans; D016896:Treatment Outcome