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APA Citation
von Wagner, C., Hirst, Y., Tookey, S., Kerrison, R. S., Marshall, S., Prentice, A., Vulkan, D., Macleod, U., & Duffy, S. (2018). use of a GP-endorsed 12 months' reminder letter to promote uptake of bowel scope screening: protocol for a randomised controlled trial in a hard-to-reach population. BMJ open, 8(5), . http://access.bl.uk/ark:/81055/vdc_100137789310.0x00000e