Erratum to: Tech Coloproctol (2015) 19:567–575 DOI 10.1007/s10151-015-1371-9

Unfortunately, a reference Giannini et al. [83] was omitted in the text citation as well as in the reference section of the published article. This reference should be cited in “Surgical treatment” section. The omitted reference number [83] is cited now and the sentence must read as below.

“Patients with acute hemorrhoidal crisis may be successfully treated with highly standardized and bioavailable mixture of flavonoids and triterpenes in order to avoid or to delay, invasive procedures (if the acute crisis resolves) [82, 83].”

The reference must be included in the Reference section.