Comparing a Guideline-Based Mobile Health Intervention Versus Usual Care for High-Risk Adolescents With Asthma: Protocol of a Randomized Controlled Trial. - Perry TT; Turner JH; Berlinski A; Simmons LA; Brown RH; Neal K; Marshall SA; He X; Chung S; Brown A; Spencer Rd HJ; Bian J (JMIR research protocols, 2025)