Subject(s)

Adult , Middle Aged , Humans , Female , Breast Neoplasms/epidemiology , Rural Population , Antineoplastic Combined Chemotherapy Protocols , Axilla , Breast Neoplasms/complications , Breast Neoplasms/therapy , Edema/etiology , Lymphatic Metastasis , Mastectomy, Modified Radical , Pulmonary Fibrosis/etiology , Retrospective Studies , Socioeconomic Factors