Under the patronage of Prince Mishaal bin Majed bin Abdulaziz, Governor of Jeddah, the 21st annual scientific conference entitled \"Challenges in Women\'s Health\" started its activities here yesterday. The Conference was organized by Saudi Society of Obstetrics and Gynecology, in cooperation with the Asian Organization of Gynecology and Obstetrics. As many as 400 doctors and researchers in the fields of obstetrics and gynecology from the Kingdom of Saudi Arabia and various countries are taking part in the four-day Conference.