32. Zetterberg, H. Cerebrospinal fluid biomarkers for Alzheimer’s disease: current limitations and recent developments. 28, 402–409 (2015). Curr. Opin. Psychiatry 33. Landau, S. M. Comparing positron emission tomography imaging and cerebrospinal fluid et al. measurements of 74, 826–836 (2013). Ann. Neurol. β-amyloid.
32. Zetterberg, H. Cerebrospinal fluid biomarkers for Alzheimer’s disease: current limitations and recent developments. Curr. Opin. Psychiatry 28, 402–409 (2015). 33. Landau, S. M. et al. Comparing positron emission tomography imaging and cerebrospinal fluid measurements of β-amyloid. Ann. Neurol. 74, 826–836 (2013).