CMEO: a metadata-centric ontology for clinical studies exploration and harmonization assessment. - Komal Gilani; Wei Wei; Christof Peters; Marlo Verket; Hans-Peter Brunner-La Rocca; Enrico Nicolis; Martina Colombo; Katharina Marx-Schütt; Visara Urovi; Michel Dumontier (BMC Medical Informatics Decis. Mak., 2026)