TY  - JOUR
T1  - DIagnostic problems
Y1  - 1959/09/19
N1  - 10.1001/jama.1959.03010210055015
JO  - Journal of the American Medical Association
SP  - 303
EP  - 311
VL  - 171
IS  - 3
N2  - 
SN  - 0002-9955
M3  - doi: 10.1001/jama.1959.03010210055015
UR  - http://dx.doi.org/10.1001/jama.1959.03010210055015
ER  -