1 Introduction
Major Depression Disorder (MDD) is a psychiatric disorder defined as a state of low mood with a significantly higher level of duration/severity. It negatively impacts one’s day to day life, causing people to become reluctant or unable to perform everyday activities, which can negatively affect a person’s sleeping, sense of well-being, behaviour, feelings, etc. [1]. In extreme cases it can lead to suicide, which is the leading cause of death for men under 50 in the UK [2]. Depression is currently the most prevalent mental health disorder and the leading cause of disability in developed countries. A correct and early diagnosis can be vital to provide the right mental health support at the right time. It facilitates communication between (potential) patients and health professionals about the support and services they need [3] and is the key to choosing the correct intervention for treating patients.