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APA Citation
Jiang, L., Chen, W., Geng, Q., Du, G., He, P., Feng, D., Qin, T., & Wei, X. (2019). the cardiothoracic ratio: a neglected preoperative risk-stratified method for patients with rheumatic heart disease undergoing valve replacement surgery. European journal of cardio-thoracic surgery, 55, 511–517. http://access.bl.uk/ark:/81055/vdc_100094056655.0x00002d