@book{207761,
	author = {Johnson, Timothy P.,},
	title = {Health survey methods /},
	publisher = {Wiley,},
	year = {2015.},
	series = {Wiley handbooks in survey methodology},
	address = {Hoboken, New Jersey :},
	url = {http://onlinelibrary.wiley.com/book/10.1002/9781118594629}
}