Greek medicine was part of Greek culture .
Syrian Eastern Christians came in contact with Greek while the Eastern Roman Empire ( Byzantium ) ruled Syria and Western Mesopotamia , regions that were conquered from Byzantium in the 7th century by Arab Muslims .
Greek medicine was part of Greek culture , and Syrian Eastern Christians came in contact with it while the Eastern Roman Empire ( Byzantium ) ruled Syria and Western Mesopotamia , regions that were conquered from Byzantium in the 7th century by Arab Muslims .