Prognostic impact of indoleamine 2,3-dioxygenase 1 (IDO1) mRNA expression on circulating tumour cells of patients with head and neck squamous cell carcinoma oleh Amanda Psyrri, Evangelos Giotakis, Panagiota Economopoulou, Athina Kladi-Skandali, Areti Strati, George Koytsodontis, Efthymios Kirodimos, Pavlos Maragoudakis, Eleni Gagari, Eirini Maratou, George Dimitriadis, Ioannis Kotsantis, Elena Vagia, Maria Anastasiou, Maria Gkotzamanidou, George Kavourakis, Evi Lianidou