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In the southern city of Khan Younis, the European hospital - the only facility providing neurosurgery, cardiac care and cancer treatment in Gaza - has been out of service since 13 May.

The majority of cases appear to involve the neurosurgery department.

It was not until his meeting at the neurosurgery unit in Oxford that he was told that the leads were so far away from the target that they couldn't work.

Further, the results of the study by Oregon Health & Science University involving neurosurgery patients suggests new possibilities for tapping into those areas to improve learning among people bedeviled by math.

John Andrews, MD, a resident in neurosurgery, placed the tissue on a nutrient medium that resembles the cerebrospinal fluid that bathes the brain.