Education and Training

Medical School

MD - SUNY Downstate College of Medicine, Brooklyn, NY


Pediatrics - Children's Hospital of Philadelphia, Philadelphia, PA


Pediatric Hematology/Oncology - Children's Hospital of Philadelphia, Philadelphia, PA

Board Certification

Pediatric Hematology-Oncology – American Board of Pediatrics

Graduate Degree

MSCE - University of Pennsylvania, Philadelphia, PA

Titles and Academic Titles

Attending Physician

Assistant Professor of Clinical Pediatrics, Perelman School of Medicine at the University of Pennsylvania

Conditions Treated

Departments and Services

Research Interests

  • Hematology – Sickle cell disease, bleeding disorders, cytopenias
  • Oncology – Leukemia, lymphoma




Citrin Rebecca, Getz Kelly D, Li Yimei, Huang Yuan-Shung, Horowitz Joseph P, Seif Alix E, Fisher Brian T, Aplenc Richard: The epidemiology of rasburicase use in paediatric patients with acute lymphoblastic leukaemia and non-Hodgkin lymphoma. British journal of haematology 184(4): 684-688, Feb 2019.


Citrin R, Horowitz JP, Reilly AF, Li Y, Huang Y-S, Getz KD, Seif A, Fisher B, Aplenc R. : Creation of a pediatric mature B-cell non-Hodgkin lymphoma cohort within the Pediatric Health Information System Database. PLOS ONE  12(10): e0186960, October 2017.



Regina M Myers, Kelly D Getz, Yimei Li, Yuan-Shung V. Huang, Rebecca Citrin, Caitlin W Elgarten, Benjamin L Laskin, Joseph P. Horowitz, Brian T. Fisher and Richard Aplenc: Comparative Effectiveness of Rasburicase and Allopurinol in Children with Acute Lymphoblastic Leukemia: An Emulated Pragmatic Trial Using Observational Data. Blood 132: 830, 2018.

Posters and Presentations


Lena E. Winestone, Kelly D Getz, Yimei Li, Rebecca Citrin, Yuan-Shung V. Huang, Kira Bona, Emily DePaul, Alix E. Seif, Julie C Fitzgerald, Brian T Fisher and Richard Aplenc: Recession Increases Need for Intensive Care in Pediatric Hematologic Malignancy Presentation. Blood 130: 612, 2017.

Awards and Honors

2015-2017, Eagles Fly for Leukemia Scholar
2010, Gold Humanism Honor Society
2010, Summa Cum Laude, SUNY Downstate College of Medicine
2009, Alpha Omega Alpha Medical Honor Society (Junior Member and Secretary)
2005, Distinction within the Biological Basis of Behavior major, University of Pennsylvania