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
Rothman KJ. BMI-related errors in the measurement of obesity. Int J Obes. 2008 Aug 1;32 Suppl 3:S56-9.
Pladevall M, Arana A, Varas-Lorenzo C. Systematic reviews and meta-analyses in ischemic cardiopathy. Cardiovasc Risk Fact. 2000;4:270-81.
Pladevall-Vila M, Arana A, Varas-Lorenzo C. Systematic reviews and meta-analysis on coronary heart disease. (Revisiones sistemáticas y meta-análisis en cardiopatía isquemica). Cardiovasc Risk Fact. 2000;4:270-81.
Sorensen HT, Sabroe S, Gillman M, Rothman KJ, Madsen KM, Fischer P. Continued increase in prevalence of obesity in young Danish men. Int J Obes. 1997 Aug;21(8):712-4.