Table 8.

Countries with the strongest occurrence among top 500 cited articles (analysis by VOSviewer).

Rank	countries	Documents	Citations	Total link strength
1	USA	324	60,991	110
2	England	60	12,502	90
3	Canada	21	6,093	75
4	Germany	51	8,902	61
5	Australia	17	5,165	58
6	Netherlands	39	7,807	54
7	Sweden	13	2,902	52
8	Belgium	12	3,230	44
9	North Ireland	12	2,289	43
10	Italy	10	1,578	34
11	Ireland	10	1,368	33
12	Japan	18	3,670	33
13	France	13	2,104	32
14	Scotland	10	1,434	29
15	China	6	836	7