Ahmed, I. et al. 2026. Comparison of Metformin plus Nicotinamide Solution with Kligman formula in the management of Melasma- a Clinical Trial in a Tertiary Care Hospital. Pakistan Armed Forces Medical Journal. 76, SUPPL-2 (Mar. 2026), S340-S343. DOI:https://doi.org/10.51253/pafmj.v76iSUPPL-2.10432.