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APA Citation
Hui, L., Leung, M. P., Ha, S. Y., Chau, A. K. T., & Cheung, Y. F. (2003). early detection of left ventricular dysfunction in patients with β thalassaemia major by dobutamine stress echocardiography. Heart, 89(6), 669–670. http://access.bl.uk/ark:/81055/vdc_100135131292.0x000007