ddRAD-seq reads of Palearctic vipers (genus Vipera)
customized version of the protocol by Brelsford et al. 2016 Heredity 116(2):177-181, which involves enzyme restriction by MseI and SbfI and a size selection window of 400500 bp (available at https://dx.doi.org/10.17504/protocols.io.kxygx3nzwg8j/v1).