And there's more.........

Clinical Infectious Diseases
Vol. 45, No. 9, 1 November 2007.

Journal of the Medical Association of Thailand
Vol. 90, No. 8, August 2007.

New England Journal of Medicine
Vol. 357, No. 16, October 18 2007.

International Journal of Epidemiology
Vol. 36, No. 5, October 2007.

AIDS
Vol. 21, No. 17, 12 November 2007.

AIDS
Vol. 21, Supplement 5, October 2007.

Epidemiology & Infection
Vol 135, No. 8, November 2007.

Science
Vol. 318, No. 5851, 2 November 2007.