Wow, Kazim Koyuncu story is really tragic. Though, I must say, it is very hard to tie any individual case of this nature to any specific cause.

Do you know if these were persistent his isotope counts in tea or in any other environmental reservoirs in Turkey? I think in most of Ukraine it was gone in a few years after Chernobyl - though in Vinnitsa,for example, they had abnormal infant mortality and still births in 1986 and for a few years afterwards.