References ^ Florin, Todd A., M.D.; Ludwig, Stephen; Aronson, Paul L., M.D. (CON); Werner, Heidi C., M.D. (CON) (2014). Netter's Pediatrics, Elsevier Science Health Science div. BiggerBooks. ISBN 9781437711554 (revised Nov 2023)^ (2013). Netter's Pediatrics ECampus. ISBN 9781437711554 (revised Jan 2016)