Housing conditions and respiratory disease

My father Charles Milliken Smith O B E MD wrote this but I regret that I can't recall having read it. I do have a memory that he told me about some migrant families who were rehoused away for the slums and that these people although not now overcrowded ( apparently this could be quite extreme) somehow missed their friends . My father a Glaswegian died some 40 years ago.
Alan M Smith BM BChFRCP Ed