Address r e print r eq uests to : Pi l-Yeob Choi. M.D. , Departme n t o f Diagnosti c Rad iology Masan Sa ms ung Hospital.~ 50 , 2 Hapsung-Dong, H oewon-G u, Masan , 6 30-5 22, KoreaTel. 82-55 1-90-6092 Fax.82-55 1-90-608 3
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