Forns J, Vegas O, Julvez J, Garcia-Esteban R, Rivera M, Lertxundi N, Guxens M, Fano E, Ferrer M, Grellier J, Ibarluzea J, Sunyer J. Association between child cortisol levels in saliva and neuropsychological development during the second year of life. Stress Health. 2014 Apr;30(2):142-8. doi: 10.1002/smi.2504
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