Rh negative frequencies in the Ukraine higher than previously expected

KRAKOW, POLAND - FEBRUARY 20: A woman and her child hold small Ukrainian national flags during a protest for peace in Ukraine at Krakow's UNESCO listed Main Square on February 20, 2022 in Krakow, Poland. For the past days, NATO Defence Ministers have gathered in Brussels to discuss the expansion of military points along the European Eastern flank. Ongoing conversations between Western countries and Russia to de-escalate the crisis at the Russian-Ukrainian border continue, but Western leaders continue to claim that there is a very high chance that a Russian invasion might happen in the coming days. (Photo by Omar Marques/Getty Images)