Akashi-Ronquest N, Carrillo P, Dembling B, Stern S. Measuring the biases in self-reported disability status: evidence from aggregate data. Appl Econ Lett. 2011 Feb 23;18(11):1053-60. doi: 10.1080/13504851.2010.524603
Rousu M, Kosa K. Allowing options in experimental auctions. Appl Econ Lett. 2005;12(13):817-21. doi: 10.1080/13504850500193059
Rothman KJ, Glass RL, Espinal F, Velez H. Caries-free teeth in the absence of fluoride ion. J Public Health Dent. 1972;32(4):225-8. doi: 10.1111/j.1752-7325.1972.tb03977.x