HRH Princess Maha Chakri Sirindhorn granted an audience to Prof. Harald zur Hausen, Prince Mahidol Awardee 2005 in public health, as he presented the authorized copy of the Birth Certificate of HM King Ananda Mahidol at Sa Pathum Villa on 4 December 2006. Professor zur Hausen was accompanied by Prof. Jonathan M. Samet, Prince Mahidol Awardee 2004 in public health and his spouse.