TY  - RPRT
TI  - Progressive systemic sclerosis.
AU  - R A Harper
AU  - D C Jackson
PY  - 1965
DO  - 10.1259/0007-1285-38-455-825
UR  - https://pubmed.ncbi.nlm.nih.gov/5842579/
ID  - 5842579
ER  -