Lennon RP, Miller EL, Snyder B, Van Scoy LJ. Self-reported influenza and influenza-like symptoms in U.S. adults age 18-64 between September 1, 2019 and April 15, 2020. J Clin VIrol. 2021 Jan;134:104709. doi: 10.1016/j.jcv.2020.104709
Arvelo W, Sosa SM, Juliao P, Lopez MR, Estevez A, Lopez B, Morales-Betoulle ME, Gonzalez M, Gregoricus NA, Hall AJ, Vinje J, Parashar U, Lindblade KA. Norovirus outbreak of probable waterborne transmission with high attack rate in a Guatemalan resort. J Clin VIrol. 2012 Sep;55(1):8-11. doi: 10.1016/j.jcv.2012.02.018
Derby CA, Araujo AB, Johannes CB, Feldman HA, McKinlay JB. Measurement of erectile dysfunction in population-based studies: the use of a single question self-assessment in the Massachusetts Male Aging Study. Int J Impot Res. 2000 Aug 1;12(4):197-204.