GLP1R and type 2 diabetes mellitus: Abd El Aziz Abd El Aziz MS MS Kahle Kahle M M Meier Meier JJ JJ Nauck Nauck MA MA Meta-analysis comparing clinical effects of short- or long-acting GLP-1-receptor agonists versus insulin treatment from head-to-head studies in type 2 diabetic patients Meta-analysis comparing clinical effects of short- or long-acting GLP-1-receptor agonists versus insulin treatment from head-to-head studies in type 2 diabetic patients Diabetes Obes Metab Diabetes Obes Metab 2017 2017 19 19 216 216 227 227 10.1111/dom.12804 10.1111/dom.12804 supplied-pmid 27717195?