Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
* Total Citation Counts Rankings
World Rank
101,028
Country Rank
8,379
Institution Rank : 92
![](https://cdn.adscientificindex.com/logos/11134.jpg)
![United Kingdom](/flags/gb.png)
![Simon Conroy](https://cdn.adscientificindex.com/pictures/ae/1398241.jpg)
Acute care for older people with frailty
geriatric emergency medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,547
6,568
0.688
* Total Citation Counts Rankings
World Rank
256,173
Country Rank
10,153
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/10442.png)
![Germany](/flags/de.png)
![Hans Juergen Heppner](https://cdn.adscientificindex.com/pictures/08/1788404.jpg)
Geriatrics
Emergency medicine
Intensive care
infections
sepsis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,828
2,450
0.640
* Total Citation Counts Rankings
World Rank
1,793,310
Country Rank
18,317
Institution Rank : 426
![](https://cdn.adscientificindex.com/logos/6334.jpg)
![Poland](/flags/pl.png)
![Radosław Perkowski](/user/assets/images/profile/no-profile-photo.png)
geriatrics
prevention of falls
urinary incontinence
emergency medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28
23
0.821
* Total Citation Counts Rankings
World Rank
1,799,563
Country Rank
389,432
Institution Rank : 833
![](https://cdn.adscientificindex.com/logos/16635.png)
![United States](/flags/us.png)
![Saket Saxena](/user/assets/images/profile/no-profile-photo.png)
Geriatric Medicine
Emergency Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27
27
1.000
* Total Citation Counts Rankings
World Ranking
101,028
Country Ranking
8,379
Institution Ranking
92
Simon Conroy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,547
6,568
0.688
![](https://cdn.adscientificindex.com/logos/11134.jpg)
Acute care for older people with frailty
geriatric emergency medicine
* Total Citation Counts Rankings
World Ranking
256,173
Country Ranking
10,153
Institution Ranking
16
Hans Juergen Heppner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,828
2,450
0.640
![](https://cdn.adscientificindex.com/logos/10442.png)
Geriatrics
Emergency medicine
Intensive care
infections
sepsis
* Total Citation Counts Rankings
World Ranking
1,793,310
Country Ranking
18,317
Institution Ranking
426
Radosław Perkowski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28
23
0.821
![](https://cdn.adscientificindex.com/logos/6334.jpg)
geriatrics
prevention of falls
urinary incontinence
emergency medicine
* Total Citation Counts Rankings
World Ranking
1,799,563
Country Ranking
389,432
Institution Ranking
833
Saket Saxena
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27
27
1.000
![](https://cdn.adscientificindex.com/logos/16635.png)
Geriatric Medicine
Emergency Medicine