Year | Frequency | Centrality | Keyword | Year | Frequency | Centrality | Keyword |
2009 | 697 | 0.24 | Internet | 2010 | 175 | 0.26 | Prevalence |
2009 | 660 | 0.54 | Care | 2010 | 108 | 0.17 | Risk |
2009 | 649 | 0.50 | Health | 2011 | 221 | 0.66 | Attitude |
2009 | 395 | 0.50 | Impact | 2016 | 131 | 0.01 | Knowledge |
2009 | 291 | 0.03 | Education | 2019 | 129 | 0.39 | Mental health |
2009 | 271 | 0.00 | Information | 2019 | 43 | 0.38 | Medical student |
2009 | 237 | 0.66 | Health care | 2020 | 173 | 0.00 | Covid-19 |
2009 | 196 | 0.09 | Physician | 2020 | 88 | 0.13 | Anxiety |
2009 | 199 | 0.09 | Quality | 2020 | 87 | 0.26 | Depression |
2009 | 104 | 0.03 | Medical education |
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