Davis BR, Lee-Kong SA, Migaly J, Feingold DL, Steele SR (March 2018). "The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Management of Hemorrhoids". Diseases of the Colon and Rectum. 61 (3): 284–292. doi:10.1097/DCR.0000000000001030. PMID29420423.
Davis BR, Lee-Kong SA, Migaly J, Feingold DL, Steele SR (March 2018). "The American Society of Colon and Rectal Surgeons Clinical Practice Guidelines for the Management of Hemorrhoids". Diseases of the Colon and Rectum. 61 (3): 284–292. doi:10.1097/DCR.0000000000001030. PMID29420423.