TY  - RPRT
TI  - The code of chronicity.
AU  - A M Ludwig
AU  - F Farrelly
PY  - 1966
DO  - 10.1001/archpsyc.1966.01730180002002
UR  - https://pubmed.ncbi.nlm.nih.gov/5925132/
ID  - 5925132
ER  -