Sunkara, H.P., Kilaru, K.R., Kumar, A.P., Ramineni, H.B. and Krishna, P.R. 2020. A case report on hydroquinone induced exogenous ochronosis. International Journal of Advances in Medicine. 7, 2 (Jan. 2020), 337–339. DOI:https://doi.org/10.18203/2349-3933.ijam20200091.