Health services research

The validity of information on "race" and "Hispanic ethnicity" in California birth certificate data.

Health services research

Baumeister L, Marchi K, Pearl M, Williams R, Braveman P

Quality of primary care practice in a large HMO according to physician specialty.

Health services research

Grumbach K, Selby JV, Schmittdiel JA, Quesenberry CP

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