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Publisher
- oxford university press / usa18
- elsevier b.v.15
- ovid technologies (wolters kluwer health)13
- american association of neurological surgeons & the journal of neurosurgical publishing group12
- elsevier bv11
- lippincott williams & wilkins, inc9
- elsevier8
- journal of neurosurgery publishing group (jnspg)8
- elsevier inc.7