Qa'dah 18, 1431 / Oct. 26, 2010, SPA -- Director-General of World Health Organization Dr. Margaret Chan expressed thanks to Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud for holding the Mass Gathering Medicine International Conference under his patronage. Dr. Chan praised the king for leading the kingdom and its people to the level of the advanced countries. Her remarks came during her meeting yesterday evening with Minister of Health Dr. Abdullah Alrabaia'ah.