P2‐143: Method Comparison of AB(1‐42) Measured in Human Cerebrospinal Fluid Samples by Liquid Chromatography‐Tandem Mass Spectrometry, the Inno‐Bia ALZBIO3 Assay, and the Elecsys® B‐Amyloid(1‐42) Assay. (1st July 2016) - Shaw, Leslie M.; Fields, Leona; Korecka, Magdalena; Waligórska, Teresa; Trojanowski, John Q.; Allegranza, Deirdre; Bittner, Tobias; He, Ying; Morgan, Kelly; Rabe, Christina