308 - Bone Marrow Composition of Transgender Youth at Initiation of a Puberty Blocker: A Two Site Study

Carly Guss, Boston Children's Hospital, Boston, MA, United States; Amy D. DiVasta, Boston Children's Hospital, Mansfield, MA, United States; Mekibib Altaye, Cincinnati Children's Hospital Medical Center, CINCINNATI, OH, United States; Halley M. Wasserman, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; R Korkodilos, Boston Children's Hospital, Boston, MA, United States; Leah Tyzinski, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; Sridhar Vajapeyam, Boston Children's Hospital, Boston, MA, United States; Kirsten Ecklund, Boston Children's Hospital, Boston, MA, United States; Robert v. Mulkern, Children's Hospital, Boston Harvard Medical School, Boston, MA, United States; Heidi Kalkwarf, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States