Brenner Gary J, Kueppenbender Karsten, Mao Jianren, Spike Jeffrey
Department of Anesthesia, Critical Care and Pain Medicine, Center for Pain Medicine, Massachusetts General Hospital, Wang Ambulatory Care Center Suite 340, 15 Parkman Street, Boston, MA 02114, USA.
Curr Pain Headache Rep. 2012 Feb;16(1):1-8. doi: 10.1007/s11916-011-0242-y.