Abstract An association between exposure to a risk factor and age-at-onset of disease may reflect an effect on the rate of disease occurrence or an acceleration of the disease process. The difference in age-at-onset arising from case-only studies. however. may also reflect secular trends in the prevalence of exposure to the risk factor. https://www.diegojavierfares.com/amazing-find-Bonnet-Protector-Guard-Suits-Holden-Calais-VT-VX-8-1997-9-2002-H260B-hot-choice/