fate of transports leaving the Jewish Ghetto, the council to Aid Jews (Zegota) was established in late 1942, in cooperation with church groups. The organisation saved thousands. Emphasis was placed on protecting children, as it was nearly impossible to intervene directly against the heavily guarded transports. The Germans implemented several different laws to separate Poles and Jews in the ghettos with Poles living on the "Aryan Side" and the Jews living on the "Jewish Side", despite the risk of death many Poles risked their lives by forging "Aryan Papers" for Jews to make them appear as non-Jewish Poles so they could live on the Aryan side and avoid Nazi persecution. Another law implemented by the Germans was that Poles were forbidden from buying from Jewish shops in which, if they did, they were subject to execution. Jewish children were also distributed among safe houses and church networks. Jewish children were often placed in church orphanages and convents. Some three million gentile Polish citizens perished during the course of the war, over two million of whom were ethnic Poles (the remainder being mostly Ukrainians and Belarusians). The vast majority of those killed were civilians, mostly killed by the actions of Nazi Germany and the Soviet Union. Aside from being sent to Nazi concentration camps, most ethnic Poles died through shelling and bombing campaigns, mass executions, forced starvation, revenge murder, ill health, and slave labour. Along with Auschwitz II-Birkenau, the main six extermination camps in occupied Poland were used predominantly to exterminate Jews. Stutthof concentration camp was used for mass extermination of Poles. A number of civilian labour camps (Gemeinschaftslager) for Poles (Polenlager) were established inside Polish territory. Many Poles died in German camps. The first non-German prisoners at Auschwitz were Poles who were the majority of inmates there until 1942 when the systematic killing of the Jews began. The first killing by poison gas at Auschwitz involved 300 Poles and 700 Soviet prisoners of war. Many Poles and other Central and Eastern Europeans were also sent to concentration camps in Germany: over 35,000 to Dachau, 33,000 to the camp for women at Ravensbrück, 30,000 to Mauthausen and 20,000 to Sachsenhausen. The population in the General Government's territory was initially about 12 million in an area of 94,000 square kilometres, but this increased as about 860,000 Poles and Jews were expelled from the German-annexed areas and "resettled" in the General Government. Offsetting