00245nam a2200097Ia 450000500170000024500270001726000570004458300230010194200060012499900170013020260716043453.0  aPERSPECTIVES IN HEALTH  bPAHOa525 23rd Street, N.W. Washington, D.C. 20037US  c10/21/02kSANDRA_W  cS  c47959d47959