“…The incidence of fatal complications following instrumentation for benign pathology in this review was similar to the experience of others (Nealon et al, 1961;Alford, Johnson, and Harris, 1963). Our results have also confirmed the importance of the site of perforation in relation to postoperative mortality and morbidity, as demonstrated by Mathewson and his colleagues (1962) and Foster and his colleagues (1965).…”