TY  - RPRT
TI  - Observations on recent increase in mortality from asthma.
AU  - F E Speizer
AU  - R Doll
AU  - P Heaf
PY  - 1968
DO  - 10.1136/bmj.1.5588.335
UR  - https://pubmed.ncbi.nlm.nih.gov/5317525/
ID  - 5317525
ER  -