42. Congenital Upper Extremity Defects: USA National Incidence and Risk Factors - Hilliard T. Brydges, BS; Michael F. Cassidy, BA; Bachar F. Chaya, MD; David L. Tran, MD; Ogechukwu C. Onuh, BA; Matteo Laspro, BA; Arthur R. Celestin, MD; Sheel Sharma, MD (Plastic and Reconstructive Surgery, Global Open, 2023)