Early Life Intervention in Paediatrics Supported by E-Health (ELIPSE)—a coaching app for parents to reduce obesity and second-hand smoke exposure in children: study protocols for two parallel-group randomised controlled trials. - Koch, Alexander; Wyssen, Andrea; Haupt, Clemens; Hammelbeck, Johanne; van Dorland, Hendrika Anette; Flück, Christa E.; Latzin, Philipp; Saner, Christoph; Jakob, Julian; Kaess, Michael; Kopp, Matthias Volkmar (Trials, 2025)