New advanced search and export fields

Clinical trials - data export

Added two new columns to the clinical trials export: Start date and End date.

Advanced search

Added two new advanced search fields: Research organization search for patents (Assignees) and Funding program search for Grants

Fixes

• Fixed an issue where the VOSviewer network for researchers returned an error in rare cases

• Fixed an issue with the DOI linkout in cases where the DOI includes a hash character