Table 1.

Data status at different stages of processing.

Scenario	Description	Status of data based on the scenario
A	Hospital/research institution physically holds personal data	Personal data
B	Hospital/research institution has legal access to decryption key/personal data	Pseudonymized data
C	Hospital/research institution combine decryption keys/personal data to process data	Anonymized data
D	Third party (cloud service provider) carries out processing, hospitals share encryption keys jointly	Anonymized data