Lichenstein Richard, Teshome Getachew
Pediatric Emergency Medicine Research, University of Maryland School of Medicine, 110 South Paca Street, 8-S-139, Baltimore, MD 21201, USA.
Pediatr Clin North Am. 2013 Oct;60(5):xv-xvii. doi: 10.1016/j.pcl.2013.08.001. Epub 2013 Aug 23.