aDepartment of General Surgery, Institute of Micro-Invasive Surgery of Zhejiang University, Sir Run Run Shaw Hospital, Medical College of Zhejiang University
bDepartment of Biomedical Engineering, Key Laboratory of Biomedical Engineering of Ministry of Education, Zhejiang University, Hangzhou, PR China
Correspondence to Dr Haoran Qian, MD, Department of General Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou, 310016, PR China
Tel: +86 571 86090073; e-mail: [email protected]
Received 5 March 2009 Accepted 10 June 2009