Submitted for Publication: August 31, 2013; final revision received December 11, 2013; accepted January 10, 2014.
Published Online: March 6, 2014. doi:10.1001/jamaoto.2014.48.
Study concept and design: Goudakos, Markou, Tsaligopoulos.
Acquisition, analysis, or interpretation of data: Goudakos, Markou, Psillas, Vital.
Drafting of the manuscript: Goudakos, Markou, Psillas, Vital.
Critical revision of the manuscript for important intellectual content: Goudakos, Tsaligopoulos.
Statistical analysis: Goudakos, Markou, Psillas, Vital.
Obtained funding: Goudakos.
Administrative, technical, or material support: Goudakos, Markou.
Study supervision: Goudakos, Markou, Tsaligopoulos.
Conflict of Interest Disclosures: None reported.