Governor Peter Shumlin signed Vermont’s breast density reporting bill into law this week, making it the 28th state to have such legislation in place.

The bill was first introduced by Sen. Joe Benning after Leslie Mulcahy, a constituent from Waterford, shared her story with him. Mulcahy had breast cancer detected by an ultrasound after it was completely missed by a mammogram. She went ahead with the ultrasound due to information she read about breast density online.

“I know that this law will have a huge beneficial impact on all Vermont women,” Mulcahy said in a statement. “It will raise awareness to the danger of breast density, encourage women to advocate for themselves, and above all, help many women get the life-saving early detection they deserve.”

The legislation applies to exams that take place on Jan. 15, 2017, and later.