1. Alsaadi, S. M., McAuley, J. H., Hush, J. M., & Maher, C. G. (2011). Prevalence of sleep disturbance in patients with low back pain. European Spine Journal, 20(5), 737–743.
2. Ancoli-Israel, S., Cole, R., Alessi, C., Chambers, M., Moorcroft, W., & Pollak, C. P. (2003). The role of actigraphy in the study of sleep and circadian rhythms. Sleep, 26(3), 342–392.
3. Anderson, E. (2013). Streetwise: Race, class, and change in an urban community. University of Chicago Press.
4. Anderson, K. O., Green, C. R., & Payne, R. (2009). Racial and ethnic disparities in pain: Causes and consequences of unequal care. The Journal of Pain, 10(12), 1187–1204.
5. Anderson, N. B., Bulatao, R. A., Cohen, B., & National Research Council (US) Panel on Race, E. (2004). Race/ethnicity, socioeconomic status, and Health. In: Critical Perspectives on Racial and Ethnic Differences in Health in Late Life. National Academies Press (US). https://www.ncbi.nlm.nih.gov/books/NBK25526/