Abbreviations
Questionnaire for Crying, Feeding, and SleepingConsolidated Standards of Reporting TrialsConsolidated Standards of Reporting Trials of Electronic and Mobile Health Applications and Online Tele HealthGerman Register of Clinical StudiesEltern-Belastungs-InventarSocial Support Questionnaireintervention groupintention-to-treatPerceived Maternal Parenting Self-Efficacy Questionnairerandomized controlled trialbaseline testposttestwaitlist control group