“…For example, Bastani et al (1999) used a statewide cancer registry to obtain a random sample of patients with breast cancer to identify eligible relatives who then received mailed information, which resulted in higher uptake of mammography services. Similar examples can be found in the areas of weight loss (Sherwood et al, 2006), occupational exposure (Needleman et al, 2003), hepatitis risk (Squires et al, 2003), and sexually transmitted disease (Wong et al, 2005).…”