Continue reading the main story. The Wallace Line swerves among the islands of Indonesia from just west of Bali to the seas south of the Philippines. Itâs named after the British naturalist Alfred Russel Wallace, who discovered in the mid-19th century that different species of flora and fauna grew on either side.he Wallace Line swerves among the islands of Indonesia from just west of Bali to the seas south of the Philippines.
The USPSTF recommends that women who are 50 to 74 years old and are at average risk for breast cancer get a mammogram every two years. Women who are 40 to 49 years old should talk to their doctor or other health care professional about when to start and how often to get a mammogram. Women should weigh the benefits and risks of screening tests when deciding whether to begin getting mammograms at age 40.
The American Cancer Society recommends mammography every 2 years for women ages 55 and older [14]. Other health organizations recommend women 50-69 have mammograms every year [15]. For a summary of research studies on mammography in women ages 50-69, visit the Breast Cancer Research Studies section.