TI  - HElps to medical diagnosis. (a card system.)
PT  - JOUR
DP  - 1909
TA  - Journal of the American Medical Association
pages = {1279-1280},
VI  - LII
IP  - 16
AID  - 10.1001/jama.1909.02540420059022 [doi]
4100  - http://dx.doi.org/10.1001/jama.1909.02540420059022
SO  - Journal of the American Medical Association April 17, 1909 LII(16):1279