Controversial U.S. guidelines for mammography issued in 2009, calling for screening every two years rather than annually for women over 50 years old, can result in breast cancers being missed, according to U.S. researchers studying the hotly debated topic. Dr. Elizabeth Arleo of Weill Medical College of Cornell University and lead researcher examined the impact of the revised task force guidelines on

women 40 to 49 years of age and 65 years and older.

Read the article here: https://www.reuters.com/article/2012/11/27/us-mammography-idUSBRE8AQ0RM20121127.