Table 6.

Top 20 journals in terms of times of co-citation.

No.	Frequency	Centrality	Journal
1	1217	0.25	Pancreas
2	1152	0.23	Gut
3	1071	0.26	Gastroenterology
4	985	0.02	Pancreatology
5	962	0.01	World J Gastroentero
6	958	0.25	Am J Gastroenterol
7	612	0.02	Ann Surg
8	603	0.01	Brit J Surg
9	514	0.01	New Engl J Med
10	490	0.01	Lancet
11	446	0.01	Plos One
12	443	0.01	Digest Dis Sci
13	415	0.01	Clin Gastroenterol H
14	408	0.01	J Clin Gastroenterol
15	387	0.12	Crit Care Med
16	341	0.01	J Pancreas
17	337	0.06	Arch Surg-Chicago
18	334	0.01	Scand J Gastroentero
19	325	0.01	Surgery
20	291	0.04	J Gastroen Hepatol