Fig. 1: Consort Diagrams for US RPDR and UK CPRD.

a Flowchart of inclusion and exclusion criteria of study population in RPDR. b Flowchart of inclusion and exclusion criteria of study population in CPRD.
a Flowchart of inclusion and exclusion criteria of study population in RPDR. b Flowchart of inclusion and exclusion criteria of study population in CPRD.