Charles A Yankah

Aortic valve replacement with the Mitroflow pericardial bioprosthesis: durability results up to 21 years.

Roland Hetzer, R. Hetzer, M. Pasic, 2008, The Journal of thoracic and cardiovascular surgery.

Mitroflow aortic pericardial bioprosthesis--clinical performance.

Roland Hetzer, Armin Zittermann, R. Hetzer, 2009, European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery.

Surgical treatment of right-sided active infective endocarditis with or without involvement of the left heart: 20-year single center experience.

Roland Hetzer, Rudolf Meyer, R. Hetzer, 2007, European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery.