By Freed G.L.   in Maternal and Child Health Journal

ISSN:1092-7875|02|4|231-239

Springer Publishing Company ‎(1998)‎

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By Freed G.L.   DeFriese G.H.   Williams D.   Behar L.   in Health Policy

ISSN:0168-8510|55|3|209-225

Elsevier‎(2001)‎

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By Freed G.L.   Andreae M.C.   Cowan A.E.   Katz S.L.   in Health Policy

ISSN:0168-8510|62|3|291-307

Elsevier‎(2002)‎

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By Freed G.L.   Clark S.J.   Hibbs B.F.   Santoli J.M.   in American Journal of Preventive Medicine

ISSN:0749-3797|26|1|11-14

Elsevier‎(2004)‎

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