@inbook{57997809, author={Stephen Ludwig and Brandon C. Ku}, editor={Shah, Samir S. and Ludwig, Stephen}, title={Chapter 6. Poor Weight Gain}, booktitle={Symptom-Based Diagnosis in Pediatrics}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2014}, url={accesspediatrics.mhmedical.com/content.aspx?aid=57997809} }