Author Contributions: Drs Benjamin, Heyns, and Busch had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Heyns, Busch, Crookes.
Acquisition of data: Swanevelder, Pappalardo.
Analysis and interpretation of data: Benjamin, Wright, Busch.
Drafting of the manuscript: Heyns, Benjamin, Swanevelder, Laycock.
Critical revision of the manuscript for important intellectual content: Pappalardo, Crookes, Wright, Busch.
Statistical analysis: Benjamin, Swanevelder, Laycock, Wright, Busch.
Obtained funding: Heyns.
Administrative, technical, or material support: Heyns, Laycock, Pappalardo, Crookes, Busch.
Study supervision: Heyns.
Financial Disclosures: Dr Busch is the recipient of an unrestricted research grant from Chiron Corp and has received speaking honoraria from Chiron and Gen-Probe. Dr Busch is a member of Scientific Advisory Boards of Chiron Corp and Gen-Probe Inc, the manufacturers of the IDNAT assays. No other authors reported disclosures.
Funding/Support: This study was supported in part by an unrestricted research grant from Blood Systems Foundation, Scottsdale, Ariz, and a grant from the South African National Blood Service.
Role of the Sponsor: Blood Systems Foundation played no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; nor in preparation, review, or approval of the manuscript.