1. Department of Orthopaedics; Director, Fellowship Training Programs, The University of Texas Health Science Center at San Antonio, San Antonio, USA
2. Limb Preservation Service, Departement of Vascular surgery, Madigan Army Medical Center, Takoma, USA
3. Podiatry Section, Carl T. Hayden VA Medical Center, Phoenix, USA
4. Weil Foot and Ankle Institute, Des Plaines, USA