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                                    Comparing hospital compensation to actual costs based on the Greek Diagnosis-Related Group system in ophthalmology  
                                
                                
                                Argyrios  Tzamalis MD, PhD, MA, FEBO,George  Chionos MD,Periklis  Brazitikos MD, PhD,Ioannis  Tsinopoulos MD, PhD,Stavros  Dimitrakos MD, PhD,Michael A. Talias MD, PhD