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
317,266
Country Rank
106,348
Institution Rank : 432
![](https://cdn.adscientificindex.com/logos/1726.jpg)
![United States](/flags/us.png)
![Gerald Callahan](https://cdn.adscientificindex.com/pictures/c4/910521.jpg)
Immunology
narrative pathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,987
170
0.057
* Total Citation Counts Rankings
World Rank
347,336
Country Rank
114,782
Institution Rank : 466
![](https://cdn.adscientificindex.com/logos/1726.jpg)
![United States](/flags/us.png)
![Olver Swardson](/user/assets/images/profile/no-profile-photo.png)
hematology
clinical pathology
iron metabolism
proteomics
erythrocyte biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,672
855
0.320
* Total Citation Counts Rankings
World Rank
484,265
Country Rank
152,160
Institution Rank : 603
![](https://cdn.adscientificindex.com/logos/1726.jpg)
![United States](/flags/us.png)
![Tawfik Aboellail](https://cdn.adscientificindex.com/pictures/62/910787.jpg)
Veterinary pathology
pathogenesis of viral diseases
animal disease models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,700
944
0.555
* Total Citation Counts Rankings
World Rank
1,664,952
Country Rank
371,521
Institution Rank : 1,135
![](https://cdn.adscientificindex.com/logos/1726.jpg)
![United States](/flags/us.png)
![Allison Watson](https://cdn.adscientificindex.com/pictures/1c/5370637.jpg)
Veterinary pathology
anatomic pathology
dermatopathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44
43
0.977
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
317,266
![United States](/flags/us.png)
106,348
![](https://cdn.adscientificindex.com/logos/1726.jpg)
432
Gerald Callahan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,987
170
0.057
![](https://cdn.adscientificindex.com/logos/1726.jpg)
Immunology
narrative pathology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
347,336
![United States](/flags/us.png)
114,782
![](https://cdn.adscientificindex.com/logos/1726.jpg)
466
Olver Swardson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,672
855
0.320
![](https://cdn.adscientificindex.com/logos/1726.jpg)
hematology
clinical pathology
iron metabolism
proteomics
erythrocyte biology
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
484,265
![United States](/flags/us.png)
152,160
![](https://cdn.adscientificindex.com/logos/1726.jpg)
603
Tawfik Aboellail
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,700
944
0.555
![](https://cdn.adscientificindex.com/logos/1726.jpg)
Veterinary pathology
pathogenesis of viral diseases
animal disease models
* Total Citation Counts Rankings
Rankings
![](/assets/images/world-icon.png)
1,664,952
![United States](/flags/us.png)
371,521
![](https://cdn.adscientificindex.com/logos/1726.jpg)
1,135
Allison Watson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44
43
0.977
![](https://cdn.adscientificindex.com/logos/1726.jpg)
Veterinary pathology
anatomic pathology
dermatopathology