“…Previous studies of survival in CCA patients have focused on specific subgroups-such as those at advanced stage (Park et al, 2009), receiving surgical resection (Murakami et al, 2011;Pattanathien et al, 2013;Sriputtha et al, 2013) or adjuvant therapy (Knüppel et al, 2012), or specific tumour locations (Cheng et al, 2007;Hasegawa et al, 2007;Nakagohri et al, 2008;Guglielmi et al, 2009;Bunsiripaiboon et al, 2010;Cho et al, 2010;Nuzzo et al, 2010;Li et al, 2011). In addition, most studies were retrospective, only one prospective study (Mihalache et al, 2010) has been reported, and there are none from Asian countries.…”