I am assessing the viability of a business launch for a product aimed
at researchers in the area of neuroscience, neurosurgeons and
physiotherapists.  I need to know the potential size of this market
broken down by country/region number of practitioners/type, number of
academic institutions.  Any other figures relating to this market
would also be useful such as the annual spend of such institutions,
particularly on library journal subscriptions.

If a report of this information is possible could I also have the
sources from where this information came from