Name	Info	Provider	Link
48, XXYY	free resource	Genetic Alliance	https://www.diseaseinfosearch.org/result/45
	subscription/membership/fee required	Ovid Technologies, Inc.	http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=31415381.ui
	free resource	PubMed Central	https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/31415381/
	free resource	Europe PubMed Central	https://europepmc.org/abstract/MED/31415381
	free resource	Wolters Kluwer	https://doi.org/10.1097/MD.0000000000016778