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Start Over You searched for: Creator Swan, Henry ✖ Remove constraint Creator: Swan, Henry Language English ✖ Remove constraint Language: English Subject Surgical Procedures, Operative ✖ Remove constraint Subject: Surgical Procedures, Operative Subject Ligation ✖ Remove constraint Subject: Ligation Subject Pulmonary Veins ✖ Remove constraint Subject: Pulmonary Veins Genre Articles ✖ Remove constraint Genre: Articles