Table 1. Demographic information of the participants.

		N = 14
Sex (n, %)	Female	13(92.9)
	Male	1(7.1)
Age (n, %)	<30 years	3(21.4)
	30–40 years	5(35.7)
	40–50 years	4(28.6)
	50–60 years	2(14.3)
Educational background (n, %)	Master’s	10(71.4)
	Doctorate	4(28.6)
Professional title (n, %)	Resident physician	3(21.4)
	Attending physician	4(28.6)
	Associate chief physician	3(21.4)
	Chief physician	4(28.6)
Years of experience (n, %)	<5 years	3(21.4)
	5–10 years	4(28.6)
	10–20 years	4(28.6)
	20–30 years	3(21.4)
Region (n, %)	South China	11 (78.6)
	North China	3(21.4)
Type of interview (n, %)	Face-to-face	9 (64.3)
	Telephone	5(35.7)
Relationship to the interviewer (n, %)	Knew before the interview	10(71.4)
	First met at the interview	4(28.6)