Table 1.

The top 10 countries/regions and institutions contributing to neuromyelitis optica spectrum disorder research.

Rank	Country	Number of publications	Number of citations	Average Number of Citations	H-Index	Institutions	Number of publications	Number of citations	Average Number of Citations	Location
1	USA	728	31808	52.94	89	Mayo Clinic	167	19695	125.52	USA
2	China	663	5586	11.06	38	Tohoku University	164	12109	78.3	Japan
3	Japan	415	17882	48.51	67	University of California System	148	6394	48.46	USA
4	Germany	303	16162	62.09	65	Charite Universitatsmedizin Berlin	131	7883	68.81	Germany
5	England	245	14070	61.56	63	Free University of Berlin	131	7883	68.81	Germany
6	France	202	11140	58.64	53	Humboldt University of Berlin	131	7883	68.81	Germany
7	Republic of Korea	197	5231	28.79	41	Sun Yat Sen University	126	1682	14.67	China
8	Brazil	168	5614	35.8	32	University of Oxford	121	8921	77.18	England
9	Italy	154	6153	42.38	42	University of California San Francisco	113	5893	57.97	USA
10	Australia	93	5078	56.35	28	Udice French Research Universities	110	6479	61.11	France