The UCSC Genome Browser database: 2017 update. - Cath Tyner; Galt P. Barber; Jonathan Casper; Hiram Clawson; Mark Diekhans; Christopher Eisenhart; Clayton M. Fischer; David Gibson; Jairo Navarro Gonzalez; Luvina Guruvadoo; Maximilian Haeussler; Steven G. Heitner; et al. (Nucleic Acids Res., 2017)