Matanock A, Lu X, Derado G, Cuellar VM, Juliao P, Alvarez M, Lopez B, Munoz F, Thornton A, Patel JC, Lopez G, Reyes L, Arvelo W, Blackstock AJ, Lindblade KA, Roy SL. Association of water quality with soil-transmitted helminthiasis and diarrhea in Nueva Santa Rosa, Guatemala, 2010. J Water Health. 2018 Oct;16(5):724-36. doi: 10.2166/wh.2018.207
Raghunathan K, Layton JB, Ohnuma T, Shaw AD. Observational research using propensity scores. Adv Chronic Kidney Dis. 2016 Nov;23(6):367-72. doi: 10.1053/j.ackd.2016.11.010
Pattanayak SK, Poulos C, Yang JC, Patil SR, Wendland KJ. Of taps and toilets: quasi-experimental protocol for evaluating community-demand-driven projects. J Water Health. 2009 Sep 1;7(3):434-51.
Buchner DA, Graboys TB, Johnson K, Mordin MM, Goodman L, Partsch DS, Goss TF. Development and validation of the ITG Health-Related Quality-of- Life Short-Form measure for use in patients with coronary artery disease. Integrated Therapeutics Group. Clin Cardiol. 2001 Aug;24(8):556-63.