The book "Copy Number Variants", edited by Dr. Derek M. Bickhart as part of the Methods in Molecular Biology book series, is published today. Li and Kai wrote the first chapter titled "Identification of Copy Number Variants from SNP Arrays Using PennCNV", which can be downloaded at https://www.springer.com/us/book/9781493986651. The entire book is available at Amazon at https://www.amazon.com/Copy-Number-Variants-Protocols-Molecular/dp/1493986651/.