S, KATZ; FORD A B; MOSKOWITZ R W; JACKSON B A; JAFFE M W (1963). "Studies of Illness in the Aged". Journal of the American Medical Association. 185 (12): 914–9. doi:10.1001/jama.1963.03060120024016. PMID14044222.
iscb.info
"Our aims". International Society For Clinical Biostatistics. 22 February 2015. Retrieved 15 March 2024.
S, KATZ; FORD A B; MOSKOWITZ R W; JACKSON B A; JAFFE M W (1963). "Studies of Illness in the Aged". Journal of the American Medical Association. 185 (12): 914–9. doi:10.1001/jama.1963.03060120024016. PMID14044222.