P. P., S., S. M. J., P. K. K., and K. F. F. “A Case Report of Papillon - Lefevre Syndrome”. Journal of Pierre Fauchard Academy (India Section), vol. 26, no. 2, Dec. 2018, pp. 64-68, http://www.informaticsjournals.com/index.php/jpfa/article/view/22827.