Tingkat pengetahuan wanita usia subur mengenai kanker payudara dan upaya pencegahannya di RT 14/004 Sidomulyo kota Bengkulu = Level of knowledge of the childbearing-age women toward breast cancer and preventive efforts of breast cancer in RT 14/004 Sidomulyo Bengkulu city - Lusiana, Dessy (2014)