00465nas a2200169 4500000000100000000000100001008004100002100001400043700001400057700001600071700001500087700001300102245015200115300000700267490000700274022001400281 2017 d1 aS. Collin1 aI. Bakken1 aI. Nazareth1 aE. Crawley1 aP. White00aHealth care resource use by patients before and after a diagnosis of chronic fatigue syndrome (CFS/ME): a clinical practice research datalink study a600 v18 a1471-2296