Dhurat R, Sukesh M, Avhad G, Dandale A, Pal A, Pund P. A randomized evaluator blinded study of effect of microneedling in androgenetic alopecia: a pilot study. Int J Trichology. 2013;5(1):6-11. doi:10.4103/0974-7753.114700 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3746236/