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APA Citation
Hyland, M. E., Kenyon, C. A., Allen, R., & Howarth, P. (1993). diary keeping in asthma: comparison of written and electronic methods.. BMJ, 306(6876), 487–489. http://access.bl.uk/ark:/81055/vdc_100137796453.0x000043
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Hyland, M. E., Kenyon, C. A., Allen, R., & Howarth, P. (1993). diary keeping in asthma: comparison of written and electronic methods.. BMJ, 306(6876), 487–489. http://access.bl.uk/ark:/81055/vdc_100137796453.0x000043