"Cunningham R" - Selaus tekijän mukaan Kansanterveyslaitos KTL
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Prospective case-control study of role of infection in patients who reconsult after initial antibiotic treatment for lower respiratory tract infection in primary care
MacFarlane J; Prewett J; Rose D; Gard P; Cunningham R; Saikku P; Euden S; Myint S
BMJ : Nov 8 (1997)