Author Contributions:Study concept and design: Damian and Gupta. Acquisition of data: Damian, Yiasemides, and Armour. Analysis and interpretation of data: Damian. Drafting of the manuscript: Damian and Yiasemides. Critical revision of the manuscript for important intellectual content: Damian, Yiasemides, Gupta, and Armour. Statistical analysis: Damian. Administrative, technical, and material support: Damian, Yiasemides, Gupta, and Armour. Study supervision: Damian.