The authors regret that the sentence:
The latter technique was later optimised and polished when he returned to the Iberian Peninsula to work with the great Basque neurosurgeon Juan Burzaco Santurtún (1930–2006) – [is incorrect sentence].
The correct sentence is:
A technique that was later optimised and polished in the Iberian Peninsula with the gamma knife by the great Basque neurosurgeon Juan Burzaco Santurtún (1930–2006).
The authors would like to apologise for any inconvenience caused.


