1. Section of Plastic Surgery, Department of Surgery, University of Michigan Health System, Ann Arbor
2. Center for Statistical Consultation and Research, University of Michigan, Ann Arbor
3. Department of Biostatistics, University of Michigan, Ann Arbor
4. Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, New York
5. now with the Division of Plastic and Reconstructive Surgery, Department of Surgery, Brigham Health, Boston, Massachusetts