Patient-Specific Lymphocyte Loss Kinetics as Biomarker of Spleen Dose in Patients Undergoing Radiation Therapy for Upper Abdominal Malignancies oleh Anirudh Yalamanchali, MS, BS, Hong Zhang, PhD, MS, Ke Colin Huang, PhD, Radhe Mohan, PhD, Steven H. Lin, MD, PhD, Cong Zhu, MPH, Stuart A. Grossman, MD, Jian-Yue Jin, PhD, Susannah G. Ellsworth, MD