1. Postoperative vascular complications in unrecognised Obstructive Sleep apnoea (POSA) study protocol: an observational cohort study in moderate-to-high risk patients undergoing non-cardiac surgery. Issue 1 (9th January 2014) Authors: Chan, Matthew T V; Wang, Chew-Yin; Seet, Edwin; Tam, Stanley; Lai, Hou-Yee; Walker, Stuart; Short, Timothy G; Halliwell, Richard; Chung, Frances Other Names: David Hui author non-byline.; Gordon Choi author non-byline.; Tony Gin author non-byline.; Matthew Tsang author non-byline.; Beaker Fung author non-byline.; Angela Miu author non-byline.; Alex Lee author non-byline.; Eleanoir FF Chew author non-byline.; Carolyn CW Yim author non-byline.; Alvin SB... Journal: BMJ open Issue: Volume 4:Issue 1(2014) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗