A novel mass spectrometric assay for the cerebroside sulfate activator protein (saposin B) and arylsulfatase A oleh Andrew J. Norris, Julian P. Whitelegge, Arman Yaghoubian, Jean-Rene Alattia, Gilbert G. Privé, Tatsushi Toyokuni, Hubert Sun, Mai N. Brooks, Luigi Panza, Pamela Matto, Federica Compostella, Natascha Remmel, Ralf Klingenstein, Konrad Sandhoff, Claire Fluharty, Arvan Fluharty, Kym F. Faull