@misc{indiciae8468e28b0780, title = {Some methodological aspects of using postal questionnaires with the elderly.}, author = {C R Victor}, year = {1988}, doi = {10.1016/0167-4943(88)90028-3}, url = {https://pubmed.ncbi.nlm.nih.gov/3415396/}, note = {Source identifier: 3415396} }