1. Department of General Surgery, Taizhou First People's Hospital in Zhejiang Province, Taizhou, Zhejiang 318020, P.R. China
2. Department of Microbiology, School of Biological Sciences, Universiti Sains Malaysia, 11800 Penang, Malaysia
3. Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, 11800 Penang, Malaysia