Dataset from Evaluate the Effect of Risk Factors That Influence the Immunogenicity of GSK Biologicals' Twinrix Compared to Hepatitis A and Hepatitis B Vaccines Given Separately and to Show the Non-inferiority Between the Vaccines in Adults

This protocol posting describes the booster phase of the study. The objectives & outcome measures of the primary phase are presented in a separate protocol posting (NCT number = NCT00289731).