Hideaki Oe ,Department of Surgery, Otsu Red Cross Hospital, Shiga Prefecture, Japan,

Ryuichiro Doi ,Department of Surgery, Otsu Red Cross Hospital, Shiga Prefecture, Japan,

Yoshihiro Tominaga ,Director, Department of Endocrine Surgery, Nagoya 2nd Red Cross Hospital, Nagoya, Japan, Yoshihiro Tominaga, Director, Department of Endocrine Surgery, 2-9 Myoken-cho, Showa-ku, Nagoya, Japan 4668650, Phone: 81-528321121, Fax: 81-528320149, e-mail: ytomi@nagoya2.jrc.or.jp, ytomi@nagoya2.jrc.or.jp

Manabu Okada ,Department of Transplant and Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Aichi Prefecture, Japan,

Takayuki Yamamoto ,Department of Transplant and Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Aichi Prefecture, Japan,

Takahisa Hiramitsu ,Department of Transplant and Endocrine Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Aichi Prefecture, Japan,

Inhye Park ,Department of Surgery, Division of Breast and Endocrine Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,

Nayoon Her ,Department of Surgery, Division of Breast and Endocrine Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,

Jun-Ho Choe ,Department of Surgery, Division of Breast and Endocrine Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,

Jung-Han Kim ,Department of Surgery, Division of Breast and Endocrine Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,

Jee Soo Kim ,Department of Surgery, Division of Breast and Endocrine Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea,

Seyed Ziaeddin Rasihashemi ,Department of Cardiothoracic Surgery, Tabriz University of Medical Sciences, Tabriz, Iran,

Ali Ramouz ,Department of Cardiothoracic Surgery, Tabriz University of Medical Sciences, Tabriz, Iran,

Nassir Rostambeigi ,Department of Radiology, University of Minnesota, Minneapolis, Massachusetts, USA,

Tae-Yon Sung ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Jong Ho Yoon ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Minkyu Han ,Department of Clinical Epidemiology and Biostatistics, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Yi Ho Lee ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Yu-mi Lee ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Dong Eun Song ,Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Ki-Wook Chung ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Won Bae Kim ,Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Young Kee Shong ,Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Suck Joon Hong ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Özer Makay ,Department of General Surgery, Division of Endocrine Surgery, Ege University, Turkey,

Esra Yuksel ,Department of Anesthesia and Reanimation, Ege University, Turkey,

Asuman Sargin ,Department of Anesthesia and Reanimation, Ege University, Turkey,

Murat Ozdemir ,Department of General Surgery, Division of Endocrine Surgery, Ege University, Turkey,

Varlik Erol ,Department of General Surgery, Izmir Baskent University, Turkey,

Osman Bozbiyik ,Department of General Surgery, Division of Endocrine Surgery, Ege University, Turkey,

Sezgin Ulukaya ,Department of Anesthesia and Reanimation, Ege University, Turkey,

Mahir Akyildiz ,Department of General Surgery, Division of Endocrine Surgery, Ege University, Turkey,

Tae-Yon Sung ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Jong Ho Yoon ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Yi Ho Lee ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Yu-mi Lee ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Ki-Wook Chung ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Suck Joon Hong ,Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Korea,

Woo Young Kim ,Department of Surgery, Ajou University Hospital, Suwon-si, Gyeonggi-do, South Korea,

Jeonghun Lee ,Department of Surgery, Ajou University Hospital, Suwon-si, Gyeonggi-do, South Korea,

Euy-Young Soh ,Department of Surgery, Ajou University Hospital, Suwon-si, Gyeonggi-do, South Korea,

Jia Liu ,Department of Thyroid surgery, The First Hospital of Jilin University, Changchun, Jilin, China,

Guang Chen ,Department of Thyroid surgery, The First Hospital of Jilin University, Changchun, Jilin, China,

Jin-Seong Cho ,Department of Surgery, Chonnam National University Medical School, Gwangju, South Korea,

Min-Ho Park ,Department of Surgery, Chonnam National University Medical School, Gwangju, South Korea,

Jung-Han Yoon ,Department of Surgery, Chonnam National University Medical School, Gwangju, South Korea,

Jandee Lee ,Yonsei University College of Medicine, Seoul, South Korea, Department of Surgery, Severance Hospital, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Republic of Korea, Department of Surgery, Open NBI Convergence Technology Research Laboratory, Yonsei University, College of Medicine, Seoul, Republic of Korea, Assistant Professor, Department of Surgery,

Jung Bum Choi ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

SeulGi Lee ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Min Jhi Kim ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Tae Hyung Kim ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Eun Jeong Ban ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Cho Rok Lee ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Sang-Wook Kang ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Jong Ju Jeong ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Kee-Hyun Nam ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Woong Youn Chung ,Department of Surgery, Yonsei University Hospital, Seoul, South Korea,

Cheong Soo Park ,Department of Surgery, Gang Nam Yonsei University Hospital, Seoul, South Korea,