Rajab NA, Rassol AAA, Assaf SM, Sallam A- sayed A. PREPARATION AND EVALUATION OF FENTANYL TRANSDERMAL PATCHES USING LIDOCAINE AS A MODEL DRUG AND AZELAIC ACID AS A PENETRATION ENHANCER. Int J Pharm Pharm Sci [Internet]. 2017 Apr. 1 [cited 2024 Nov. 25];9(4):223. Available from: https://journals.innovareacademics.in/index.php/ijpps/article/view/18914