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Wahl, Andreas; Praz, Fabien; Stinimann, Jessica; Windecker, Stephan; Seiler, Christian; Nedeltchev, Krassen; Mattle, Heinrich P; Meier, Bernhard (2008). Safety and feasibility of percutaneous closure of patent foramen ovale without intra-procedural echocardiography in 825 patients. Swiss medical weekly, 138(39-40), pp. 567-72. Muttenz: EMH Schweizerischer Ärzteverlag
