Academy of Medical Sciences of Islamic Republic of IranArchives of Iranian Medicine1029-29771322010Letter to the Editor172174ENVafaRahimi-MovagharSina Trauma and Surgery Research Center, Sina Hospital, Hassan-Abad Square, Imam Khomeini Ave, Tehran University Medical Sciences,Tehran, 11365-3876, Iran.SaeidShahrazE-mail: saeid_shahraz@harvard.eduMohsenNaghaviE-mail: saeid_shahraz@harvard.edu0020010132/AIM.0020