Aspirin in Preventing Recurrence of Cancer in Patients With HER2 Negative Stage II-III Breast Cancer After Chemotherapy, Surgery, and/or Radiation Therapy

Hypofractionated Radiation Therapy After Mastectomy in Preventing Recurrence in Patients With Stage IIa-IIIa Breast Cancer

Nutrition Therapy in Improving Immune System in Patients With Bladder Cancer That Can Be Removed by Surgery

Pegylated Liposomal Doxorubicin Hydrochloride With Atezolizumab and/or Bevacizumab in Treating Patients With Recurrent Ovarian, Fallopian Tube, or Primary Peritoneal Cancer

Breast Cancer WEight Loss Study (BWEL Study)

Evaluation of Mammographic Breast Density in Participants With Hormone Receptor-Negative Breast Cancer Enrolled on Study A011502

Comparison of Axillary Lymph Node Dissection With Axillary Radiation for Patients With Node-Positive Breast Cancer Treated With Chemotherapy