Poulos C, Yang JC, Patil SR, Pattanayak S, Wood S, Goodyear L, Gonzalez JM. Consumer preferences for household water treatment products in Andhra Pradesh, India. Soc Sci Med. 2012 Aug 1;75(4):738-46.
Poulos C, Yang JC, Levin C, Minh HV, Giang KB, Nguyen D. Mothers' preferences and willingness to pay for HPV vaccines in Vinh Long Province, Vietnam. Soc Sci Med. 2011 Jul 1;73(2):226-34.