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spec: He pursued postgraduate training in internal medicine at Buffalo General Hospital and fellowship training in gastroenterology at Yale University . But in most of the cases , these restrictions were not observed strictly . Workers live in tin and stick shacks with cardboard walls and dirt floors ; housing entire families in a space the size of two cubicles ; as many as five people are crammed into one bed . Insurance carriers must also provide separate reports for the Act and each of its extensions , ( i.e ., Longshore and Harbor Workers ' Compensation Act , Outer Continental Shelf Lands Act , Defense Base Act , and Nonappropriated Fund Instrumentalities Act ) . Friend also has concerns about funding generally , and about special educational needs , so in the remaining moments I shall address some of those as well . Workers of the future will need not only technological skills but also the ability to collaborate . Since 1997 , Dr. Cronin has been the main representative for the International Federation of Social Workers ( IFSW ) , acting as the public face of social work at the United Nations . Others simply find text descriptions uninspiring , tedious , and inefficient . Only in the late 1990s did the decisive evidence come in , from sources like satellite and ground measurements , that the ozone layer had been damaged . Among such political forces , the Partido dos Trabalhadores ( Workers Party , henceforth PT ) is to be singled out .