Top Collaborative Partnerships Based on Absolute Publication Counts.

<p>The top 15 collaborative partnerships were determined for each two-country pair in 2000 (dark blue) and 2010 (light blue). Ten partnerships rated high in both years: Canada-USA, France-Germany, France-UK, France-USA, Germany-UK, Germany-USA, Italy-USA, Japan-USA, Spain-USA, UK-USA. Overall, the number of publication increased for all top pairs with the exceptions of Sweden-Switzerland.