To Assess the Level of Adherence of Subjects Receiving SAIZEN® Via Easypod™ in Greece

This is a National, Multicentre, Observational Registry to study adherence and long term outcomes of therapy in paediatric subjects using Easypod™ electromechanical device for growth hormone treatment from hospitals in Greece and to assess the level of adherence of subjects receiving SAIZEN® via Easypod™.

Subjects will be enrolled in a multicenter, longitudinal observational registry. Parents/subjects will provide their Informed Consent/assent to upload their data for populationbased analyses and optionally to adhere to a patient adherence support program designed to improve their adherence and, ultimately, clinical outcomes. Adherence data will be primarily derived from the Easypod™ device combined with physician data entry of outcome measures. Data will be collected retrospectively and prospectively. This will allow the establishment of adherence profiles and explore the hypothesis that patient adherence support programs improve adherence and subsequent clinical outcomes. Collected data will be also analyzed in a multinational pooled analysis of comparable national studies. Primary Objective: \- To assess the level of adherence of subjects receiving SAIZEN® via Easypod™ Secondary Objectives: * To identify adherence subject profiling * To describe the impact of adherence on clinical outcomes for subject receiving SAIZEN® via Easypod™ * To asses the impact of adherence on Insulin-like Growth Factor 1 (IGF1) (i.e. above, below or within normal ranges) * To assess/describe the impact of the Greek Scientific Service (Patient Support Program)