Gunawardena S, Gunawardena N, Kahathuduwa G, Karunaweera N, de Silva N, Ranasinghe U, Samarasekara S, Nagodavithana K, Rao R, Rebollo M and Weil G. (2014). Integrated school-based surveillance for soil-transmitted helminth infections and lymphatic filariasis in Gampaha district, Sri Lanka. American Journal of Tropical Medicine and Hygiene. 90: 661 – 666. doi:10.4269/ajtmh.13-0641.