Trends and frontiers in signal amplification for aptamer-based tumor detection: A bibliometric analysis

Table 1 Top 10 countries and institutions ranked by publication counts

Rank	Country/institution	Publications	Citations	Average citations	H-index
	Country
1	China	647	20896	32.3	77
2	Iran	53	2514	47.4	30
3	United States	42	1753	41.7	26
4	Spain	13	636	48.9	11
5	South Korea	11	437	39.7	6
6	Japan	7	142	20.3	5
7	Canada	6	274	45.7	6
8	England	6	256	42.7	4
9	Turkey	6	235	39.2	5
10	India	6	83	13.8	5
	Institution
1	Nanjing University	45	2290	50.9	27
2	Chinese Academy of Sciences	40	1605	40.1	21
3	Southwest University	38	1230	32.4	22
4	Qingdao University Science and Technology	36	1247	34.6	22
5	Hunan University	33	1373	41.6	20
6	Central South University	32	1089	34.0	24
7	Nanjing Medical University	22	589	26.8	12
8	Chongqing Medical University	21	548	26.1	11
9	Shanghai University	20	753	37.7	15
10	Sun Yat-Sen University	19	678	35.7	13