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APA Citation
Mohanan Nair, K. K., Namboodiri, N., Abhilash, S. P., Thajudeen, A., & Valaparambil, A. (2017). narrow QRS tachycardia with RR alternans and QRS alternans: what is the mechanism?. Acta cardiologica, 72(6), 675–676. http://access.bl.uk/ark:/81055/vdc_100066548911.0x000064