1. World Health Organization. Guideline: Preventive chemotherapy to control soil-transmitted helminth infections in at-risk population groups. 2017 ISBN: 978 92 4 155 011 6. [cited 2017 Oct 11]. Available from: http://apps.who.int/iris/bitstream/10665/258983/1/9789241550116-eng.pdf?ua=1
2. World Health Organization. Preventive Chemotherapy in human helminthiasis. Coordinated Use of Anthelminthic Drugs in Control Interventions: a Manual for Health Professionals and Programme Managers.2006. ISBN 92 4 1547 10 [cited 2017 Oct 11]. Available from: http://apps.who.int/iris/bitstream/10665/43545/1/9241547103_eng.pdf
3. World Health Organization. Helminth control in school-age children: a guide for managers of control programmes. 2nd ed. 2011. ISBN 9 789241 548267 [cited 2017 Oct 11]. Available from: http://apps.who.int/iris/bitstream/10665/44671/1/9789241548267_eng.pdf?ua=1
4. The coverage and frequency of mass drug administration required to eliminate persistent transmission of soil-transmitted helminths;RM Anderson;Phil Trans Roy Soc B,2014
5. World Health Organization. Accelerating the Work to Overcome the Global Impact of Neglected Tropical Diseases. A Roadmap for Implementation. Executive Summary. 2012. WHO/HTM/NTD/2012.1 [cited 2017 Oct 11]. Available from: http://www.who.int/neglected_diseases/NTD_RoadMap_2012_Fullversion.pdf [cited 2017 Oct 11]