Table 1. Portions of the questionnaire.

Topic	Item	Control
Survey on awareness of rare diseases among doctors and recommendations for their prevention	1. How did you learn of rare diseases?	Newspapers and the Internet Professional lectures Related training Other
	2. If you encounter a rare disease that you are unfamiliar with, what you will do?	Treat in accordance with clinical experience Ask a veteran physician Look for further information Refer to another department or hospital
	3. What is the best way to improve the diagnosis and treatment of rare diseases?	Establish a network and create a platform at the provincial level to diagnose, treat, and study rare diseases Provide consultations and improve the efficiency of diagnosis and treatment of rare diseases at the provincial level
	4. Which step is the most important in setting up a network to study rare diseases?	Assemble cases and conduct scientific research Participate in joint consultations and improve diagnosis and treatment Establish molecular diagnostic techniques Carry out collaborative research and joint studies on rare diseases
	5. Have you ever conducted research on rare diseases?	Yes No
	6. Have you ever published papers about rare diseases?	Yes No
	7. Have you ever cared for patients with rare diseases?	Yes No
Disease informationare	Disease Number of cases