title: A reply.
authors.affiliation: Khoo Teck Puat Hospital, Yishun Central, Singapore. seetedwin@gmail.com.
authors.forename: E
authors.initials: E
authors.lastname: Seet
mesh_terms: D003422:Critical Care / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D011182:Postoperative Care / Q000379:methods*; D011183:Postoperative Complications / Q000453:epidemiology*; D057234:Preoperative Period; D020181:Sleep Apnea, Obstructive / Q000175:diagnosis*; D011795:Surveys and Questionnaires / Q000592:standards*