Bone and Joint Reconstruction Research Center, Department of Orthopedics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran

Financial Disclosure: The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.

Correspondence to Danial Hosseinzadeh, MD, Shafa Orthopedic Hospital, Baharestan Square, Tehran, Iran Tel: +98(21)33542000-8; Fax: +98(21)33542020; e-mail: [email protected].