Accepted for Publication: December 23, 2011.
Author Contributions:Study concept and design: Chavez, Danniel, and Ortiz. Acquisition of data: Chavez, Danniel, Jarrar, Khanmoradi, and Ortiz. Analysis and interpretation of data: Danniel, Miick, Khanmoradi, and Ortiz. Drafting of the manuscript: Chavez, Danniel, Miick, Jarrar, and Ortiz. Critical revision of the manuscript for important intellectual content: Miick, Khanmoradi, and Ortiz. Statistical analysis: Danniel. Obtained funding: Chavez. Administrative, technical, and material support: Chavez, Danniel, Miick, and Jarrar. Study supervision: Khanmoradi and Ortiz.
Conflict of Interest Disclosures: None reported.