The Lancet Infectious Diseases
The Lancet Infectious Diseases > 2006 > 6 > 11 > 710-725
The Lancet Infectious Diseases > 2006 > 6 > 11 > 733-741
The Lancet Infectious Diseases > 2006 > 6 > 11 > 710-725
The Lancet Infectious Diseases > 2006 > 6 > 11 > 733-741