van der Heijden, AANijpels, GBadloe, FLovejoy, HLPeelen, LMFeenstra, TLet al.2020-08-302020-08-302020-04-2410.1007/s00125-020-05134-3http://hdl.handle.net/10029/624326enPrediction models for development of retinopathy in people with type 2 diabetes: systematic review and external validation in a Dutch primary care setting .ArticleDiabetologia 2020; 63:1110-9