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.
De fet, només un d'aquests 306 avis havia mort de tuberculosi (TB), tot i que a principis del segle 20 la TB causava fins el 20% de les morts en les grans ciutats de l'est d'Europa.