The aim, nature and background of the study were explained in detail, and potential participants were informed that their data would remain anonymous and that any material potentially leading to individual identification would be removed.
Once, informants were selected, they were informed in detail about the current study and a written consent was retrieved.
By means of an information sheet, the participants were informed in detail about the task and the setting, and completed a self-motivational control sheet.
All were informed about study details then signed the informed consent document.
All participants were informed in details about the purpose and the course of the study.
Potential participants were informed of details of the baseline and follow-up surveys.
All subjects were informed with details about the protocol, which had been approved by the Institutional Review Board, and signed an informed consent form to participate in the study.
All patients were informed about details of the survey and gave written consent for the collection and scientific analysis of their individual data.
The subjects were informed in detail about the possible risks and benefits, and all signed an informed consent form.
All participants were informed of the details of the survey and gave written informed consent prior to their participation in the study.
