Avulsion of the left internal mammary artery graft after minimally invasive coronary surgery: fatal complication or medical error? A case report. Viel, Guido Balmaceda, Ute Sperhake, Jan 2009 - Forschungsinformationssystem des UKE
Intersecting fractures of the skull and gunshot wounds. Case report and literature review. Viel, Guido Gehl, Axel Sperhake, Jan 2009 - Forschungsinformationssystem des UKE