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Epidemiol Prev
; 32(2): 79-80; discussion 80, 2008.
Article
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| MEDLINE
| ID: mdl-18717227
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; 32(4-5): 188, 2008.
Article
in Italian
| MEDLINE
| ID: mdl-19186497
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Epidemiol Prev
; 30(4-5): 298-302; discussion 302-4, 2006.
Article
in Italian
| MEDLINE
| ID: mdl-17176946