By Dewit D.J.   Rush B.   in Evaluation and Program Planning

ISSN:0149-7189|19|1|41-64

Elsevier‎(1996)‎

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By DeWit D.J.   Hance J.   Offord D.R.   Ogborne A.   in Preventive Medicine

ISSN:0091-7435|31|5|455-464

Academic Press‎(2000)‎

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