RT Journal Article SR Electronic T1 Initial improvements in apnoea-hypopnoea index after very low calorie diet maintained for 1 year with weight loss maintenance program JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 32 OP 33 DO 10.1136/ebm.2011.100169 VO 17 IS 1 A1 Tuomilehto, Henri P I YR 2012 UL http://ebm.bmj.com/content/17/1/32.abstract AB