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APA Citation
Pucher, P. H., Qurashi, M., Howell, A., Faiz, O., Ziprin, P., Darzi, A., & Sodergren, M. H. (2015). development and validation of a symptom‐based severity score for haemorrhoidal disease: the Sodergren score. Colorectal disease, 17, 612–618. http://access.bl.uk/ark:/81055/vdc_100025935608.0x00001d