Correction to: BMC Geriatr 21, 431 (2021)

https://doi.org/10.1186/s12877-021-02333-4

Following publication of the original article [1], the authors identified an error in the reference list. The references of the main article and the supplementary files were combined into 1 list.

For clarity, the reference lists have been split. The original article has been updated.