Prosepe I, Groenwold RHH, Knevel R, Pajouheshnia R, van Geloven N. The disconnect between development and intended use of clinical prediction models for covid-19: a systematic review and real-world data illustration. Front Epidemiol. 2022 Jun;2:899589. doi: 10.3389/fepid.2022.899589
Rothman KJ, Glass RL, Espinal F, Velez H. Caries-free teeth in the absence of fluoride ion. J Public Health Dent. 1972;32(4):225-8. doi: 10.1111/j.1752-7325.1972.tb03977.x