Singh, S.K., Mohan, A., Gupta, A.K. and Pandey, A.K. 2018. A comparative study between intralesional PPD and vitamin D3 in treatment of viral warts. International Journal of Research in Dermatology. 4, 2 (Apr. 2018), 197–201. DOI:https://doi.org/10.18203/issn.2455-4529.IntJResDermatol20180953.