Journal of the Formosan Medical Association Editorial Board Editor-in-Chief Jia-Horng Kao     Associate Editor Jin-Shing Chen     Regional Editor (North America) T.-C. Wu     Consultant Editors Tsu-Pei Hung Jung-Yaw Lin Kuo-Shyan Lu   Kwen-Tay Luh Li-Min Huang   Executive Editors Chun-Jen Liu Po-Nien Tsao Tyng-Guey Wang   Chun-Pin Chiang Shuei-Liong Lin Wei-Ming Chen   Lun-Jou Lo Tur-Fu Huang Wei-Zen Sun         Editors       Cheng-Hsun Chiu I-Jong Wang Samson Wong Chia-Ti Tsai I-Rue Lai Shee-Uan Chen Chih-Hung Hsu Jenq-Yuh Ko Shen-Feng Susan Gau Chin-Chang Huang Jiann-Shing Jeng Sung-Jan Lin Chi-Tai Fang Jin-Yuan Shih Tiffany Ting-Fang Shih Chung-Hsin Chen Li-Fu Li Ting Fan LEUNG Chyong-Huey Lai Mei-Hsuan Lee Yee-Chun Chen Hsin-Fu Chen Pei-Lung Chen Yen-Hsuan Ni Hsiu-Hsi Chen Ruey-Meei Wu Yeur-Hur Lai   ------------------------------------------------------------------------------------------------- International Editorial Board Andrew Lever Professor of Infectious Diseases, Department of Medicine, University of   Cambridge, UK Ben Berkhout Professor, Head of Laboratory of Experimental Virology, Department of   Medical Microbiology, Center for Infection and Immunity Amsterdam   (CINIMA), University of Amsterdam Academic Medical Center, The   Netherlands Kuan-Teh Jeang Head, Molecular Virology Section LMM, NIAID, NIH, Bethesda, USA George Y. Wu Professor of Medicine, Chief, Division of Gastroenterology-Hepatology,   Herman Lopata Chair in Hepatitis Research, University of Connecticut   Health Center, USA Lia van der Hoek Associate Professor, Department of Human Retrovirology, University of   Amsterdam Academic Medical Center, The Netherlands Lung-Ji Chang Professor, Department of Molecular Genetics and Microbiology, Powell   Gene Therapy Center, McKnight Brain Institute, College of Medicine,   University of Florida, USA Ie-Ming Shih Associate Professor, Department of Pathology, Johns Hopkins University   School of Medicine, USA Jeong Kee Seo Professor, Chief, Division of Pediatric Gastroenterology,   Hepatology and Nutrition, Department of Pediatrics, Seoul National   University College of Medicine, Seoul National University Children's   Hospital, Korea O. John Semmes Anthem Professor for Cancer Research; Professor, Department of   Microbiology and Molecular Cell Biology and Professor,   Department of Pathology, Eastern Virginia Medical School; Director,   Center for Biomedical Proteomics; Scientific Director, Virginia Prostate   Center, USA Paul J. Lehner Professor of Immunology and Medicine, Wellcome Senior Fellow and   Honorary Consultant, University of Cambridge, Cambridge Institute for   Medical Research, Addenbrooke’s Hospital, UK Carrie L. Byington Professor of Pediatrics, Associate Chair for Clinical Research,   Department of Pediatrics, University of Utah, USA Malik Peiris Chair Professor, Department of Microbiology, The University of Hong   Kong; Scientific Director, HKU-Pasteur Research Centre, Hong Kon Lance Jennings Senior Clinical Lecturer, Christchurch School of Medicine and   Health Sciences, University of Otago, New Zealand -------------------------------------------------------------------------------------------------- Editorial Staff Formosan Medical Association   1, Chang-Te Street, Taipei 100, Taiwan. Managing Editor 　Joyce Huang Tel: (+886) (0)2 2331-0558/2381-0367/2382-1783   Fax: (+886) (0)2 2389-6716   E-mail: jfmaed@fma.org.tw     c2008 Elsevier & Formosan Medical Association ISSN 0929-6646 http://ajws.elsevier.com/jfma Publisher: ELSEVIER http://www.jfma.org.tw Publishing Editor: Vicky A.S.Y. Lam