Inter-Spousal Mortality Effects: Caregiver Burden Across the Spectrum of Disabling Disease

Nicholas A. Christakis, Health at Older Ages: The Causes and Consequences of Declining Disability among the Elderly (University of Chicago Press, 2009), chap. 15, https://www.nber.org/books-and-chapters/health-older-ages-causes-and-consequences-declining-disability-among-elderly/inter-spousal-mortality-effects-caregiver-burden-across-spectrum-disabling-disease.