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Theodoros Argyropoulos, Periklis Foukas, Maria Kefala, Panagiotis Xylardistos, Sotirios Papageorgiou, Nikolaos Machairas, Evmorfia Boltetsou, Anastasios Machairas, Ioannis G Panayiotides 
World J Gastrointest Oncol 4(4):89-93. Published online Apr 15, 2012. doi: 10.4251/wjgo.v4.i4.89