[1]
“Comparative efficacy and safety and efficacy of systemic 13-cis retinoic acid 20mg/day vs. 40mg/day in acne vulgaris”, J Pak Assoc Dermatol, vol. 15, no. 3, pp. 238–241, Dec. 2016, doi: 10.66344/jpad.15.3.2005.650.