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Publisher
- elsevier bv92
- ovid technologies (wolters kluwer health)19
- the american association for thoracic surgery. published by mosby, inc.12
- oxford university press (oup)7
- sage publications5
- springer science and business media llc4
- american college of cardiology foundation. published by elsevier inc.3
- elsevier2
- mosby, inc.2