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| Languages | Rb | PubMed literatures |
| English | 14708 (90.71) | 16365497 (80.48) |
| French | 339 (2.09) | 651295 (3.20) |
| Japanese | 226 (1.39) | 381577 (1.88) |
| Chinese | 222 (1.37) | 191680 (0.94) |
| German | 214 (1.32) | 782313 (3.85) |
| Russian | 123 (0.76) | 647606 (3.18) |
| Spanish | 87 (0.54) | 271736 (1.34) |
| Italian | 38 (0.23) | 288785 (1.42) |
| Others | 257 (1.59) | 753515(3.70) |
| Total | 16162 (100) | 20334004(100) |
[n (%)]
