We would like to thank all our participants who enthusiastically helped us; Mashhad University of Medical Sciences for financial support; and Dr H. Esmaeeli and S. Akhlaghi for assistance with the statistics.
We would like to thank all our participants who enthusiasticallyhelped us; Mashhad University of MedicalSciences for financial support; and Dr H. Esmaeeli andS. Akhlaghi for assistance with the statistics.