Karppinen, H., Pitkälä, K. H., Kautiainen, H., Tilvis, R. S., Valvanne, J., Yoder, K., & Strandberg, T. E. (2017). Changes in disability, self-rated health, comorbidities and psychological wellbeing in community-dwelling 75–95-year-old cohorts over two decades in Helsinki. Scand J Prim Health Care.

Karppinen, Helena, Kaisu H. Pitkälä, Hannu Kautiainen, Reijo S. Tilvis, Jaakko Valvanne, Käthe Yoder, και Timo E. Strandberg. "Changes in Disability, Self-rated Health, Comorbidities and Psychological Wellbeing in Community-dwelling 75–95-year-old Cohorts Over Two Decades in Helsinki." Scand J Prim Health Care 2017.

Karppinen, Helena, et al. "Changes in Disability, Self-rated Health, Comorbidities and Psychological Wellbeing in Community-dwelling 75–95-year-old Cohorts Over Two Decades in Helsinki." Scand J Prim Health Care 2017.