Bianca Mary Jacob, S. Shree Lakshmi, Sindhu R., D. Prabu, Raj Mohan, M. Dinesh Dhamodhar, Bharathwaj V.V. “The Effectiveness Of Pilocarpine On Opioid-Induced Xerostomia – A Systematic Review”. Drugs and Cell Therapies in Hematology, vol. 10, no. 1, Aug. 2021, pp. 1511-2, http://dcth.org/index.php/journal/article/view/293.