PO-0951 How to build accurate prediction models without sharing patient data across hospitals?. (April 2019) - Zhovannik, I.; Shi, Z.; Dankers, F.; Deist, T.; Traverso, A.; Kalendralis, P.; Monshouwer, R.; Bussink, J.; Fijten, R.; Aerts, H.; Dekker, A.; Wee, L.