005530000a22002050004500003000900000005001700009264005000026020001800076100003200094710005300126700001900179245005800198300001000256041000800266650002600274650001300300650001500313650001300328500000600341PH-MaWHO20241108112715.0  aSongkla, Thailand : bChanmuang Press,c2008.  a9789741149216  aChongsuvivatwong, Virasakdi  aPrince of Songkla University. Epidemiology Unit.  aMcNeil, Edward  aAnalysis of epidemiological data using R and Epicalc.  a314p.  aeng  aEpidemiologic methods  aSoftware  aStatistics  aResearch  a1