Does anyone know what is the first paper published about physical therapy for Parkinson's disease in the world? If so, can share the reference (or the pdf file)?
Follows below the reference I found. However, I am not sure this is the oldest reference.
CHRYSTAL M, HOFFNUNG A, BARSKY M, ROY JB. Possibilities and limitations of rehabilitation procedures for paralysis agitans. Phys Ther Rev (1948). 1952 May;32(5):231-5. doi: 10.1093/ptj/32.5.231. PMID: 14920202.