The eHealth lab of INAB|CERTH is in a long-term active collaboration scheme with Papageorgiou General Hospital (PGH) in terms of getting value out of healthcare data produced during healthcare (a.k.a. “Real-World Data” – RWD). To this end, the vast PGH data warehouse containing data of more than 1.4M patients have been converted to OMOP-CDM format and is actively used in the context of international studies.