I recently matched up a great-relative of mine from Krakow's Granddaughter with the nephew of a Serbian Pop-Folk Singer named Esad Plavi. From my point of view, just like isolated parts of Tesanj, the Slavic regions may have loud volume incidences of very unusual Premature Birth Complications which you don't see in non-Slavic children who were born premature. So, I wonder if there is something which would prevent this woman to have a child with a very unusual Premature Birth Complication that affects descendants of Esad Plavi's?