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. 2019 Feb 11;6(2):27. doi: 10.3390/children6020027

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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International Neuroblastoma Risk Group (INRG) classification system [4]. Reprinted with permission from American Society of Clinical Oncology © 2009, The International Neuroblastoma Risk Group (INRG) Classification System: An INRG Task Force Report; published by American Society of Clinical Oncology, 2009.