The World Medical Association (WMA) has developed the Declaration of Helsinki as a statement of ethical principles for medical research involving human subjects, including research on identifiable human material and data.

Dr. Cecilia Young Yau Yau 楊幽幽 醫生was trained at the Prince Dental Philip Dental Hospital and graduated from the University of Hong Kong with the Bachelor of Dental Surgery in 1994.

楊幽幽與港大牙科學院聯合進行研究，去年經教協向教師派發3,000份問卷，最後成功訪問594名中小學教師。除32.8%教師答對指，應帶傷者往牙科診所外；逾半人指會帶傷者到沒有牙醫應診的急症室。個別指會帶往私家醫生求診。