 During the second telephone call, those who are willing to participate in the study will get information about practical arrangement of the study and the place of the data collection. They are also informed that all travel costs will be covered and that the time for face-to-face meeting may take totally 1-1.5 hours. Participants are also aware that they are free to withdraw from the study at any time. At the end of the telephone call, a specific time for the face-to-face meeting with the Research Assistant will be arranged. 