00629nas a2200241   4500000000100000008004100001260001600042653001100058653001000069653002600079653003100105653001100136653001200147653002300159653002200182653001700204100002300221700001700244245009400261300001000355490000800365022001400373       1973                            d  c1973 Sep 1510aCanada10aChild10aCommunicable Diseases10aEmigration and Immigration10aHumans10aleprosy10aParasitic Diseases10aTropical Medicine10aTuberculosis1 aHarding le Riche W1 aLenczner M M00aNew migration pattern increases incidence in Canada of diseases common in tropical areas.  a546-80 v109  a0008-4409