TY  - RPRT
TI  - Beta-blockade in the elderly.
AU  - A van Zyl
AU  - L H Opie
PY  - 1986
DO  - 10.1016/s0140-6736(86)91117-7
UR  - https://pubmed.ncbi.nlm.nih.gov/2870237/
ID  - 2870237
ER  -