Loftfield, E., Freedman, N. D., Dodd, K. W., Vogtmann, E., Xiao, Q., Sinha, R., & Graubard, B. I. (2016). Coffee Drinking Is Widespread in the United States, but Usual Intake Varies by Key Demographic and Lifestyle Factors(1)(2)(3). J Nutr.

Loftfield, Erikka, Neal D. Freedman, Kevin W. Dodd, Emily Vogtmann, Qian Xiao, Rashmi Sinha, and Barry I. Graubard. "Coffee Drinking Is Widespread in the United States, but Usual Intake Varies By Key Demographic and Lifestyle Factors(1)(2)(3)." J Nutr 2016.

Loftfield, Erikka, et al. "Coffee Drinking Is Widespread in the United States, but Usual Intake Varies By Key Demographic and Lifestyle Factors(1)(2)(3)." J Nutr 2016.