english: In fact, only one out of these 306 grandparents had died of TB, despite the fact that in the early 20th century, TB caused up to 20 percent of deaths in large Eastern European cities.
non_english: In feite was slechts  één op de 306 grootouders gestorven aan tbc, ondanks het feit  dat in de vroege 20ste eeuw tbc in bijna 20% van de gevallen de doodsoorzaak was  in grote Oost-Europese steden.