PO-0718 Patterns of care for local recurrence of NPC after definite IMRT – a study by the HKNPCSG. (April 2019) - Ng, W.T.; Wong, E.C.; Chan, L.L.; Cheung, A.K.; Chow, J.C.; Poon, D.M.; Lai, J.W.; Chiang, C.L.; Au, K.H.; Lee, A.W.