Drupal-Bibcite31<style face="normal" font="default" size="100%">Development and validation of risk prediction equations to estimate future risk of blindness and lower limb amputation in patients with diabetes: cohort study</style><style face="normal" font="default" size="100%">Development and validation of risk prediction equations to estimate future risk of blindness and lower limb amputation in patients with diabetes: cohort study</style>