Authors' response re: Shek KL & Dietz H. Letter to the Editor Re: 'Do ultrasound findings of levator ani "Avulsion" correlate with anatomical findings: A multicenter cadaveric study'. Issue 8 (19th August 2015) - Da Silva, Ana Sofia; Digesu, Alessandro; Dell'Utri, Chiara; Fritsch, Helga; Piffarotti, Paola; Khulla, Vik