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APA Citation
Iftikhar, S. Y., Ledingham, S., Evans, D. F., Yusuf, S. W., Steele, R. J., Atkinson, M., & Hardcastle, J. D. (1995). alkaline gastro-oesophageal reflux: dual probe pH monitoring.. Gut, 37(4), 465–470. http://access.bl.uk/ark:/81055/vdc_100135561973.0x000045