Table 1.

Six randomly chosen articles for the construction of the search string and their keywords.

Article title	Keywords
The EPIRARE proposal of a set of indicators and common data elements for the European platform for rare disease registration [10]	Registries, common data elements, European platform, rare diseases, patient registration, and EPIRARE
A methodology for a minimum data set for rare diseases to support national centers of excellence for healthcare and research [11]	Common data elements, interoperability, metadata, minimum data set, national health program, and rare diseases
Development and validation of the Radiology Common Data Model (R-CDM) for the international standardization of medical imaging data [12]	Metadata, standardization, and radiology information system
Common data model for natural language processing based on two existing standard information models: CDA+GrAF [20]	Natural language processing, medical informatics, data model, information model, HL7 clinical document architecture, and ISO graph annotation format
Genomic common data model for biomedical data in clinical practice [21]	High-throughput nucleotide sequencing, data analysis, and observational study
Towards a newborn screening common data model: The Utah Newborn Screening Data Model [22]	Newborn screening, newborn screening laboratory information management system, common data model, interoperability, electronic data exchange, NBS, LIMS, and standards