N. Kumar, J. K, S. Ranjan, A. N. Varshney, and A. Anand, “Pulmonary Alveolar Proteinosis A Rare Disease: Pulmonary Alveolar Proteinosis A Rare Disease”, Natl J Integr Res Med, vol. 4, no. 5, pp. 102–104, Oct. 2013.