Universidad San Carlos in Guatemala MD 1960
University of Dusseldorf (Germany) CV Surgery 1962-64
University of Minnesota General Surgery 1964-69
University of Minnesota Cardiothoracic Surgery 1969-71
University of Minnesota Pathology fellowship 1971-72
University of Minnesota Ph.D. in Surgery 1978
University of Minnesota Instructor 1972-1974
Texas Tech University Assoc. prof of Surgery 1974-76
University of South Florida Assoc. Prof Surg 1977-78
University of Minnesota Prof. of Surgery 1991-2009
Thoracic Outlet syndrome
ICD's and Pacemakers (Adults and children)
Paget-Schroetter syndrome
Postoperative Sternal Dehiscence