Wijeyekoon, Ruwani, Vindika Suriyakumara, Ranjanie Gamage, Tharushi Fernando, Amila Jayasuriya, Dhanusha Amarasinghe, Harsha Gunasekara, Dharshana Sirisena, Dhammika Amaratunga, Chanaka Muthukuda, Roger A Barker, Caroline Williams-Gray, & Ranil De Silva. "Associations Between Lifestyle Factors And Parkinson’s Disease In An Urban Sri Lankan Clinic Study." International Archives of Medicine [Online], 10 (2017): n. pag. Web. 18 Oct. 2019