Figure 1From: Dipeptidyl peptidase-4 inhibition and narrow-band ultraviolet-B light in psoriasis (DINUP): study protocol for a randomised controlled trialDepiction of the flow of research participants through each stage of the study: randomisation of research participants to one of two study arms, stages of no treatment and of treatment, and the medications that will be received by participants at each stage of the studyBack to article page