Finkelstein EA, Mansfield C, Wood D, Rowe B, Chay J, Ozdemir S. Trade-offs between civil liberties and national security: a discrete choice experiment. Contemp Econ Policy. 2017 Apr;35(2):292-311. doi: 10.1111/coep.12188
Fleming AD, Xia X, McDicken WN, Sutherland GR, Fenn L. Myocardial velocity gradients detected by Doppler imaging. Br J Radiol. 1994 Jul 1;67(799):679-88. doi: 10.1259/0007-1285-67-799-679
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