AMERICAN FAMILY PHYSICIAN
journal30542
E007406
US
0002-838X
English
Rivista
American Academy of Family Physician:11400 Tomahawk Creek Parkway:Leawood, KS 66211:(800)944-0000, (913)906-6000, EMAIL: afpcirc@aafp.org, INTERNET: http://www.aafp.org, Fax: (913)906-6080
1970
cannot
can
false