Single-Subject Gray Matter Graph Properties and Their Relationship with Cognitive Impairment in Early- and Late-Onset Alzheimer's Disease. - Betty M. Tijms; Hiu M. Yeung; Sietske A. M. Sikkes; Christiane Möller; Lieke L. Smits; Cornelis J. Stam; Philip Scheltens; Wiesje M. van der Flier; Frederik Barkhof (Brain Connect., 2014)