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APA Citation
Tham, T. C., McLaughlin, N., Hughes, D. F., Ferguson, M., Crosbie, J. J., Madden, M., Namnyak, S., & O'Connor, F. A. (1994). possible role of Helicobacter pylori serology in reducing endoscopy workload.. Postgraduate medical journal, 70(829), 809–812. http://access.bl.uk/ark:/81055/vdc_100137783720.0x00003c