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JECH.25.1.37
JECH.25.1.37
http://dx.doi.org/10.1136/JECH.25.1.37
Method of sampling in a study of older people with a comparison of respondents and non-respondents.
P356
Q36673296-A3315838-346F-4A85-847B-D68863F3355B
P356
JECH.25.1.37
http://dx.doi.org/10.1136/JECH.25.1.37