April 7 is known as “World Health Day” and one of the main responsibilities of World Health Organization is to improve the knowledge of the world population in order to prevent various diseases⁽¹⁾. This organization selects an illness or a disorder in terms of a unique slogan in order to plan for educational, prevention, curative and re-strengthening the operation of countries around that problem. The slogan of World Health Organization in 2017 is about depression under the title ‘Let’s Talk about Depression ⁽²⁾. ....