Vass C, Gray E, Payne K. Discrete choice experiments of pharmacy services: a systematic review. Int J Clin Phar. 2016 Jun;38(3):620-30. doi: 10.1007/s11096-015-0221-1
Keenan A-M, McKenna SP, Doward LC, Conaghan PC, Emery P, Tennant A. OAQoL: development and preliminary validation of a needs-based quality of life measure for osteoarthritis. Poster presented at the American College of Rheumatology 2007 Annual Scientific Meeting; April 2007. Chicago, IL. [abstract] Rheumatology (Oxford). 2007; 46:162-3.
Lawson DH, Jick H, Rothman KJ. Coffee and tea consumption and breast disease. Surgery. 1981 Jan 1;90(5):801-3.