@book{79974,
	author = {Wentz, Kerstin.},
	title = {Symptom fluctuation in fibromyalgia :},
	publisher = {Walter de Gruyter GmbH & Co. KG,},
	year = {[2014]},
	address = {Berlin :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10820010}
}