The Child Health & Development Studies (CHDS) project is a multi-generational cohort study that followed women whose mothers enrolled in the CHDS between 1959 and 1967. The purpose of this follow-up study is to look at causes of breast cancer and other diseases affecting women that may pass from one generation to the next or be caused by things in the environment. The third generation adult daughters were recruited for a mixed-mode health survey via mail and online. SRG conducts surveys with cohort participants using mixed modes, including online surveys, phone surveys, mail surveys, and in-person surveys. Both the adult and minor third generation daughters were invited to join their mother for an in-person visit where biospecimens of blood, urine and saliva were collected.