Declarations. Financial disclosure/Conflict of interest: All authors declare no financial disclosures or conflict of interest related to this article. Ethical Compliance: The authors confirm that the approval of an institutional review board was not required for this work. Written informed consent was obtained from the patient to be videoed for publication. We confirm that we have read the Journal’s position on issues involved in ethical publication and affirm that this work is consistent with those guidelines. Funding Sources and conflict of interest: No specific funding was received for this work. The authors declare that there are no conflicts of interest relevant to this work. Financial disclosures for the previous 12 months: All the authors report no disclosures.