RecruitingClinical trialI-DECIDE After Bronchiolitis HospitalizationAlthough automatic follow-up is a nearly universal practice, research has shown that these visits are often unnecessary after hospitalizations caused by bronchiolitis. Despite endorsement by national pediatric authorities, robust evidence, and family enthusiasm for as-needed (PRN) follow-up, it remains substantially underutilized for children hospitalized for bronchiolitis. The goal of I-DECIDE is to compare the effects of two multi-component implementation strategies, both of which aim to (a) increase PRN follow-up prescribing by hospitalists (physicians who care for hospitalized children) and (b) decrease unnecessary follow-up visit attendance by families.