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  1. Health services research: an expanding field of inquiry.Marilyn J. Held PhD & Kathleen N. Lohr PhD - 1995 - Journal of Evaluation in Clinical Practice 1 (1):61-65.
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  • Health services research: an expanding field of inquiry.M. J. Field & K. N. Lohr - 1995 - Journal of Evaluation in Clinical Practice 1 (1):61.
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