@book{118691,
	author = {Keats, Theodore E. and Anderson, Mark W.},
	title = {Atlas of normal roentgen variants that may simulate disease /},
	publisher = {Elsevier/Saunders,},
	year = {c2013.},
	address = {Philadelphia :},
	edition = {9th ed.},
	note = {Includes index.}
}