Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Click for "last 6 years' i10 index". Also see: Universities Rankings 2024 (Sort by : Total i10 Index) and Universities Rankings 2024 (Sort by : Last 6 Years i10 Index)
* Total i10 Index Rankings
World Rank
3,969
Country Rank
59
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/1537.png)
![Hong Kong](/flags/hk.png)
![Francis Kl Chan](https://cdn.adscientificindex.com/pictures/3f/472745.jpg)
Gastroenterology
Medicine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
480
334
0.696
* Total i10 Index Rankings
World Rank
8,460
Country Rank
125
Institution Rank : 29
![](https://cdn.adscientificindex.com/logos/1537.png)
![Hong Kong](/flags/hk.png)
![Siew C Ng](https://cdn.adscientificindex.com/pictures/f3/409471.jpg)
Gastroenterology
Endoscopy
Medicine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
356
306
0.860
* Total i10 Index Rankings
World Rank
9,090
Country Rank
134
Institution Rank : 32
![](https://cdn.adscientificindex.com/logos/1537.png)
![Hong Kong](/flags/hk.png)
![Justin Wu](https://cdn.adscientificindex.com/pictures/9b/363044.jpg)
Gastroenterology
Integrative Medicine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
346
230
0.665
* Total i10 Index Rankings
World Rank
23,661
Country Rank
287
Institution Rank : 70
![](https://cdn.adscientificindex.com/logos/1537.png)
![Hong Kong](/flags/hk.png)
![Chiu Philip Wai Yan](https://cdn.adscientificindex.com/pictures/c0/303006.jpg)
Surgery
Endoscopy
Gastroenterology
Robotic Surgery
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
230
186
0.809
* Total i10 Index Rankings
World Rank
224,810
Country Rank
1,565
Institution Rank : 323
![](https://cdn.adscientificindex.com/logos/1537.png)
![Hong Kong](/flags/hk.png)
![YT Lee](https://cdn.adscientificindex.com/pictures/61/414514.jpg)
Gastroenterology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
24
0.400
* Total i10 Index Rankings
World Rank
2,133,207
Country Rank
7,987
Institution Rank : 1,695
![](https://cdn.adscientificindex.com/logos/1537.png)
![Hong Kong](/flags/hk.png)
![Yaoying Xie](https://cdn.adscientificindex.com/pictures/7f/5721339.jpg)
Medicine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
3,969
![Hong Kong](/flags/hk.png)
59
![](https://cdn.adscientificindex.com/logos/1537.png)
12
Francis Kl Chan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
480
334
0.696
![](https://cdn.adscientificindex.com/logos/1537.png)
Gastroenterology
Medicine
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
8,460
![Hong Kong](/flags/hk.png)
125
![](https://cdn.adscientificindex.com/logos/1537.png)
29
Siew C Ng
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
356
306
0.860
![](https://cdn.adscientificindex.com/logos/1537.png)
Gastroenterology
Endoscopy
Medicine
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
9,090
![Hong Kong](/flags/hk.png)
134
![](https://cdn.adscientificindex.com/logos/1537.png)
32
Justin Wu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
346
230
0.665
![](https://cdn.adscientificindex.com/logos/1537.png)
Gastroenterology
Integrative Medicine
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
23,661
![Hong Kong](/flags/hk.png)
287
![](https://cdn.adscientificindex.com/logos/1537.png)
70
Chiu Philip Wai Yan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
230
186
0.809
![](https://cdn.adscientificindex.com/logos/1537.png)
Surgery
Endoscopy
Gastroenterology
Robotic Surgery
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
224,810
![Hong Kong](/flags/hk.png)
1,565
![](https://cdn.adscientificindex.com/logos/1537.png)
323
YT Lee
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
24
0.400
* Total i10 Index Rankings
Rankings
![](/assets/images/world-icon.png)
2,133,207
![Hong Kong](/flags/hk.png)
7,987
![](https://cdn.adscientificindex.com/logos/1537.png)
1,695
Yaoying Xie
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
0
0
0