1. Department of Plastic and Reconstructive Surgery, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kyoto, Japan
2. Department of Biostatistics, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kyoto, Japan
3. Department of Endocrine and Breast Surgery, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kyoto, Japan