Vitale, Salvatore Giovanni, et al. “Safe Introduction of Ancillary Trocars in Gynecological Surgery: The ‘yellow island’ Anatomical Landmark”. Annali Italiani Di Chirurgia, vol. 87, no. 6, Nov. 2016, pp. 608-11, https://annaliitalianidichirurgia.it/index.php/aic/article/view/2572.