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
McKenna SP, Doward LC. How should we measure quality of life in ankylosing spondylitis? Rheumatol Pract. 2008;6(2):12-4.