Base-specific mutational intolerance near splice sites clarifies the role of nonessential splice nucleotides - Zhang, Sidi; Samocha, Kaitlin E.; Rivas, Manuel A.; Karczewski, Konrad J.; Daly, Emma; Schmandt, Ben; Neale, Benjamin M.; MacArthur, Daniel G.; Daly, Mark J. (Genome Research, 2018)