Giergiczny M, Dekker T, Hess S, Chintakayala P. Testing the stability of utility parameters in repeated best, repeated best-worst and one-off best-worst studies. Eur J Trans Infra. 2017 Sep 1;17(4):457-76. doi: 10.18757/ejtir.2017.17.4.3209
Purroy F, Cruz Esteve I, Galindo Ortego MG, Marsal Mora JR, Oro M, Plana A. Survey of the knowledge and management of transient ischemic attacks among primary care physicians and nurses. Neurologia. 2011 May;26(4):200-7. doi: 10.1016/j.nrl.2010.04.011
Michels KB, Rothman KJ. Update on unethical use of placebos in randomised trials. Bioethics. 2003 Apr;17(2):188-204.