Randomization and Trial Intervention Every patient was given a code number in the study to keep his personal information confidential. Adequate provisions to maintain privacy of participants and confidentiality of data were taken into consideration. To avoid selection bias, each candidate, who signed an informed consent for participation in the study, was given a number from one to forty four. For every two consecutive patients; the first was enrolled in group A and the second was enrolled in group B till the end of the 44 patients.