Correspondence on: “Discrepancy in Spinal Muscular Atrophy Incidence findings in newborn screening programs: the influence of carrier screening?” by Kay et al

To the Editor:We would like to congratulate Kay et al. for their article1.Kay DM, et al. Implementation of population-based newborn screening reveals low incidence of spinal muscular atrophy. Genet Med. 2020 May 18; https://doi.org/10.1038/s41436-020-0824-3 [Epub ahead of print].Google Scholar on the implementation of newborn screening (NBS) for spinal muscular atrophy (SMA) in New York State (NYS), and also salute their pioneering work in NBS...