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.ngetikin.com/limited-save-Apple-iPhone-14-Pro-Clear-Case-with-MagSafe-save-big/