Does First-Line Treatment Impact Outcomes in Trisomy 21-Associated Infantile Epileptic Spasms Syndrome? A Multicenter North American Analysis. - Cao V; Chiu MY; Chellamani H; Gupta N; Donatelli S; Pierce JG; Lockrow J; Braschel M; Whitney R; Jones K; Beatty CW; Mytinger JR; et al. (Pediatric neurology, 2026)