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Publisher
- oxford university press (oup)31
- ovid technologies (wolters kluwer health)22
- elsevier bv21
- american association for cancer research (aacr)19
- springer science and business media llc19
- oxford university press18
- journal of neurosurgery publishing group (jnspg)12
- public library of science (plos)9
- frontiers media s.a.8