Table 1 Top 10 countries and institutions on research of PCD in ONFH
Rank | Country | Counts | Percent | Institution | Country | Counts (%) |
|---|---|---|---|---|---|---|
1 | China (Asia) | 307 | 76.6 | Shanghai jiao Tong univ | 26 | 3.5 |
2 | USA (North America) | 30 | 7.5 | Xi an jiao Tong univ | 22 | 3.0 |
3 | Japan (Asia) | 17 | 4.2 | Wuhan univ | 20 | 2.7 |
4 | Belgium (Europe) | 7 | 1.7 | Huazhong univ sci & technol | 19 | 2.6 |
5 | Canada (North America) | 5 | 1.2 | China Japan friendship hosp | 16 | 2.2 |
6 | Australia (Oceania) | 4 | 1.0 | Nanjing med univ | 16 | 2.2 |
7 | Iran (Asia) | 3 | 0.7 | Soochow univ | 15 | 2.0 |
8 | Italy (Europe) | 3 | 0.7 | Peking univ | 14 | 1.9 |
9 | South Korea (Asia) | 3 | 0.7 | Fudan univ | 11 | 1.5 |
10 | Austria (Europe) | 2 | 0.5 | Inner mongolia med univ | 11 | 1.5 |