Fig. 1From: Impact of teneligliptin on oxidative stress and endothelial function in type 2 diabetes patients with chronic kidney disease: a case–control studyStudy protocol. After outpatients received sitagliptin treatment for a period of 12 months or longer, they were randomized to the sitagliptin group, who continued to be treated with sitagliptin, or the teneligliptin group, whose treatment was switched to teneligliptin at the beginning of the study periodBack to article page