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Publisher
- ovid technologies (wolters kluwer health)6
- mary ann liebert inc4
- oxford university press (oup)4
- public library of science (plos)3
- american medical association (ama)2
- elsevier bv2
- lippincott williams & wilkins2
- american journal of preventive medicine. published by elsevier inc.1
- cambridge university press (cup)1