Research progress and challenges in stem cell therapy for diabetic foot: Bibliometric analysis and perspectives

Table 2 Top 10 countries/regions with the highest research productivity

No.	Country	Np	Np, %	h-index	Nc	Nc, %	Centrality
1	United States	183	33.70	46	9663	44.84	0.83
2	China	152	27.99	32	3828	17.76	0.15
3	Iran	35	6.45	16	901	4.18	0.03
4	England	33	6.08	20	2449	11.36	0.23
5	Italy	28	5.16	14	721	3.35	0.17
6	India	25	4.60	11	1249	5.80	0.02
7	Germany	24	4.42	13	766	3.55	0.05
8	South Korea	16	2.95	11	953	4.42	0.06
9	Spain	16	2.95	8	362	1.68	0.02
10	Ireland	13	2.39	8	981	4.55	0.09

Np: Number of publications; Nc: Number of citations.