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)
![Fred Stephen Sarfo](https://cdn.adscientificindex.com/pictures/0a/97870.jpg)
Neurology
Stroke
Cardiovascular diseases
M ulcerans Disease
HIV medicine
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
155
144
0.929
![Charles K Hammond|Charles Hammond, Kumi Hammond, Charles Kumi Hammond](https://cdn.adscientificindex.com/pictures/ef/5112101.jpg)
Paediatric neurology
neuro-infections
neuro-HIV
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Fred Stephen Sarfo
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
155
144
0.929
Neurology
Stroke
Cardiovascular diseases
M ulcerans Disease
HIV medicine
Charles K Hammond|Charles Hammond, Kumi Hammond, Charles Kumi Hammond
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Paediatric neurology
neuro-infections
neuro-HIV