PAKISTAN JOURNAL OF MEDICAL SCIENCES is the most widely read peer reviewed medical journal from Pakistan It is published bi-monthly It has controlled circulation We accept original research, review articles, guest editorials, case reports, short communications, drug trials and lettersAll articles published in Pak J Med Sci under the terms of the Creative Commons Attribution License (http://creativecommonsorg/licenses/by/30), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited