*2.4. Ethical Considerations*

The study's proposal was reviewed and guaranteed clearance from the Ethical Committee of King Khalid Hospital, Najran (H-11-N081, Ali Mothanna Al-Zubaidi, 2012). The study was conducted in accordance with the Declaration of Helsinki wherein respondents were briefed about the study and the anticipated benefits of participating in the study. An information sheet explaining the aims and objectives of the study was made available for each respondent. Voluntary participation was emphasized and withdrawal from the study at any time without giving reason(s) would not disadvantage the respondent from receiving any treatment. An informed consent form was obtained before participating in the study and confidentiality of the information obtained was assured.
