Table 1.

Top 10 countries for publications

Rank	Country	Article	Citations	Total link strength	H-index
1	USA	478	26 483	283	79
2	England	178	10 188	284	52
3	Italy	149	6227	234	38
4	France	141	7089	141	38
5	Germany	135	5654	180	38
6	Netherlands	105	8750	192	37
7	Spain	104	5293	176	33
8	Canada	97	7453	195	34
9	Peoples Republic of China	85	1263	26	20
10	Australia	60	1806	87	19