1. Department of General Surgery, Rush University Medical Center, Chicago, IL, USA
2. Department of General Surgery; John H. Stroger, Jr. Hospital of Cook County, Chicago, IL, USA
3. Department of Plastic Surgery; John H. Stroger, Jr. Hospital of Cook County, Chicago, IL, USA
4. Department of Thoracic Surgery; John H. Stroger, Jr. Hospital of Cook County, Chicago, IL, USA