Table 1. Background information on participating endoscopists.

	Total
Age
20–30	20 (8.0 %)
30–35	37 (14.9 %)
35–40	53 (21.3 %)
> 40	139 (55.8 %)
Gender
Male	190 (76.3 %)
Female	59 (23.7 %)
Type of hospital at work
University affiliated hospital	109 (43.8 %)
General Hospital	73 (29.3 %)
Cancer center	23 (9.2 %)
Private clinic	40 (16.1 %)
Others	4 (1.6 %)
Years of experience
0–2	17 (6.8 %)
2–5	41 (16.5 %)
5–10	51 (20.5 %)
10–15	41 (16.5 %)
> 15	99 (39.8 %)
Number of diagnostic endoscopy per week
0–10	43 (17.3 %)
10–20	95 (38.2 %)
20–50	81 (32.5 %)
> 50	30 (12.0 %)
Countries of practice
Japan and Korea	34 (13.7 %)
Rest of Asia	56 (21.3 %)
Europe	32 (12.9 %)
North America	16 (6.4 %)
South America	105 (42.2 %)
Australia/New Zealand	6 (2.4 %)
Africa	3 (1.2 %)