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
1,242
Country Rank
551
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Milton Packer](https://cdn.adscientificindex.com/pictures/a3/4345758.jpg)
Cardiology
heart failure
clinical trials
cardiovascular
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
157,143
58,363
0.371
* Total Citation Counts Rankings
World Rank
12,223
Country Rank
5,845
Institution Rank : 7
![](https://cdn.adscientificindex.com/logos/822.jpg)
![United States](/flags/us.png)
![Paul Grayburn](/user/assets/images/profile/no-profile-photo.png)
Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,068
17,837
0.414
* Total Citation Counts Rankings
World Ranking
1,242
Country Ranking
551
Institution Ranking
2
Milton Packer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
157,143
58,363
0.371
![](https://cdn.adscientificindex.com/logos/822.jpg)
Cardiology
heart failure
clinical trials
cardiovascular
* Total Citation Counts Rankings
World Ranking
12,223
Country Ranking
5,845
Institution Ranking
7
Paul Grayburn
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,068
17,837
0.414