title: Challenges in clinical research on Alzheimer's disease: Leon Thal's legacy.
authors.affiliation: Department of Neurology, Mayo Clinic, Rochester, MN, USA. peter8@mayo.edu
authors.forename: Ronald C
authors.initials: RC
authors.lastname: Petersen
mesh_terms: D000544:Alzheimer Disease / Q000175:diagnosis* / Q000517:prevention & control*; D015415:Biomarkers / Q000032:analysis; D002986:Clinical Trials as Topic / Q000379:methods*; D006801:Humans
chemical_list: D015415:Biomarkers