Effects of Radiation Therapy and Comorbidity on Health-Related Quality of Life and Mortality Among Older Women With Low-Risk Breast Cancer: Protocol for a Retrospective Cohort Study

Eunkyung Lee   ¹ , MS, PhD ;   Robert B Hines   ² , MPH, PhD ;   Jean L Wright   ³ , MD ;   Eunji Nam   ⁴ , MA, PhD ;   Michael J Rovito   ¹ , PhD ;   Xinliang Liu   ⁵ , PhD

¹ College of Health Professions and Sciences, University of Central Florida, Orlando, FL, United States

² College of Medicine, University of Central Florida, Orlando, FL, United States

³ Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University, Baltimore, MD, United States

⁴ Department of Social Welfare, Incheon National University, Incheon, Republic of Korea

⁵ College of Community Innovation and Education, University of Central Florida, Orlando, FL, United States