Cainzos-Achirica M, Bilal U, Kapoor K, Quispe Ayala R, McEvoy JW, Pladevall-Vila M, Blumenthal RS, Blaha MJ. Methodological issues in nutritional epidemiology research–sorting through the confusion. Current Cardiovascular Risk Reports. 2018 Feb;12:4. doi: 10.1007/s12170-018-0567-8
Christensen T, Riis AH, Hatch EE, Wise LA, Nielsen MG, Rothman KJ, Toft Sorensen H, Mikkelsen EM. Costs and efficiency of online and offline recruitment methods: a web-based cohort study. J Med Internet Res. 2017 Mar 1;19(3):e58. doi: 10.2196/jmir.6716
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.