Ambulatory surgery.
D000554:Ambulatory Care Facilities; D000556:Ambulatory Surgical Procedures / Q000191:economics / Q000592:standards / Q000639:trends*; D005260:Female; D006801:Humans; D008297:Male; D010044:Outpatient Clinics, Hospital / Q000639:trends; D011183:Postoperative Complications / Q000517:prevention & control; D011184:Postoperative Period; D011300:Preoperative Care; D012449:Safety; D013043:Specialties, Surgical; D013531:Surgicenters / Q000639:trends; D014481:United States