aDepartment of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan

bInstitute of Pathology, Department of Laboratory Medicine and Pathology, Lausanne University Hospital and Lausanne University, Switzerland

cState Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China, Department of Medical Oncology, Sun Yat-sen University Cancer Center, Guangzhou, P.R. China

dSungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea

Correspondence to Laurence de Leval, MD PhD Institute of Pathology, Lausanne University Hospital, 25 rue du Bugnon, CH- 1011 – Lausanne, Switzerland. Tel: +41 21 5563714; e-mail: [email protected]