164 Chapter 6 second survey consisted of the consensus statements. After each round, the scores for each item were anonymized to a mean ranking score for the whole group and reported back to the participants. Consensus group meeting During a consensus panel meeting, the statements on which consensus had been reached in the two-round online survey were reviewed and statements on which no consensus had been reached were discussed and voted on. The meeting was chaired by a urologist of the Dutch Cancer Institute, Amsterdam (HvdP). The statements from the online survey were presented to the panel, and participants were asked to motivate their opinions on each of the statements for which no consensus had been reached previously. The list of approved steps and aspects was then categorized to develop an initial RARP assessment instrument for evaluating the surgical procedure on video. This assessment instrument was subsequently judged on face validity by the 12 experts who participated in the Delphi process. Informed consent All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2013.23 Informed consent was obtained from all participants for being included in the study.