Auschwitz death camp survivor Jadwiga Bogucka (maiden name Regulska), 89, who was registered with camp number 86356, poses for a portrait in Warsaw January 12, 2015. During the Warsaw Uprising in August, 1944, when Bogucka was 19, she and her mother were sent from their house to a camp in Pruszkow and then moved on August 12, 1944 by train to Auschwitz-Birkenau. About 1.5 million people, most of them Jews, were killed at the Nazi camp which has became a symbol of the horrors of the Holocaust and World War Two, which ravaged Europe. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Jadwiga Bogucka (maiden name Regulska), 89, registered with camp number 86356, holds a picture of herself from 1944 in Warsaw January 12, 2015. The camp was liberated by Soviet Red Army troops on January 27, 1945 and about 200,000 camp inmates survived. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Marian Majerowicz, 88, who was registered with camp number 157715, poses for a portrait in Warsaw January 13, 2015. Originally from Myszkow, Majerowicz was 17 when he was sent to Auschwitz-Birkenau. At the camp he was briefly reunited with his father, who told him that his mother and younger brother were both killed in the gas chambers. Majerowicz's father didn't survive the war. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Eva Fahidi, 90, holds a picture of her family, who were all killed in the concentration camp during World War Two, as she poses for a portrait in Budapest January 12, 2015. Fahidi was 18 in 1944 when she and her family were moved from Debrecen to Auschwitz-Birkenau. REUTERS/Laszlo Balogh 

Auschwitz death camp survivor Elzbieta Sobczynska (maiden name Gremblicka), 80, who was registered with camp number 85536, gestures as she poses for a portrait in Warsaw January 7, 2015. During the Warsaw Uprising, when Sobczynska was 10-years-old, she was sent with her mother and brother from their home to a camp in Pruszkow and then moved by train to Auschwitz-Birkenau. There they were separated into blocks for woman, girls and boys. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Elzbieta Sobczynska (maiden name Gremblicka), 80, who was registered with camp number 85536, holds her father's watch, which was kept by her brother while they were in the camp, as she poses for a portrait in Warsaw January 7, 2015. Sobczynska said that she was robbed of her childhood, and lost the chance to experience a different kind of life. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Stefan Sot, 83, who was registered with camp number 192705, poses for a portrait in Warsaw January 5, 2015. Sot was 13-years-old during the Warsaw Uprising in August 1944, when he was sent from his home to a camp in Pruszkow prior to being sent by train to Auschwitz-Birkenau camp. He was later moved to a labour sub-camp, where he worked in a kitchen for S.S. officers. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Stefan Sot, 83, who was registered with camp number 192705, holds a picture of himself taken during the war, in Warsaw January 5, 2015. After the war he worked as a typesetter at a printing house. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Halina Brzozowska, 82, who was registered with camp number 86356, poses for a portrait in Warsaw January 12, 2015. Brzozowska was 12-years-old during the Warsaw Uprising when her family were sent to a camp in Pruszkow, she and her 6-year-old sister were then moved by train to Auschwitz-Birkenau. Brzozowska said that it was hard to say what had happened to them, that they were taken from their homes, family and lost their childhood. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Halina Brzozowska, 82, who was registered with camp number 86356, holds a picture of herself which was taken during the war, as she poses for a portrait in Warsaw January 12, 2015. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Henryk Duszyk, 80, who was registered with camp number 192692, poses for a portrait in Warsaw January 12, 2015. Duszyk was 10-years-old during the Warsaw Uprising in August, 1944. He was sent to Auschwitz-Birkenau with his father, brother and stepmother. The family were separated and Duszyk only saw his father once more before he was killed at the camp. Duszyk, his brother and stepmother were kept at Auschwitz-Birkenau until the camp was liberated. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Bogdan Bartnikowski, 82, who was registered with camp number 192731, poses for a portrait in Warsaw December 18, 2014. Bartnikowski was 12-years-old during the Warsaw Uprising, when he and his mother were sent to Auschwitz Birkenau camp. They were moved between camps several times. After the war Bartnikowski worked as a pilot and then became a journalist and writer. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Bogdan Bartnikowski, 82, who was registered with camp number 192731, holds a family photograph as he poses for a portrait in Warsaw December 18, 2014. Bartnikowski was 12-years-old during the Warsaw Uprising, when he and his mother were sent to Auschwitz Birkenau camp. They were moved between camps several times. After the war Bartnikowski worked as a pilot and then became a journalist and writer. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Janos Forgacs, 87, holds a document as he poses for a portrait in Budapest January 12, 2015. Forgacs recalls that he was in a group transported to a camp in a cattle wagon, with the windows sealed with barbed wire. An military officer told them to hand over their belongings, telling them they would not need them anymore. REUTERS/Laszlo Balogh 

Auschwitz death camp survivor Maria Stroinska, 82, gestures as she poses for a portrait in Warsaw January 12, 2015. Stroinska was 12-years-old during the Warsaw Uprising when she and her sister were sent from their house to a camp in Pruszkow before she was moved alone by train to Auschwitz-Birkenau. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Maria Stroinska, 82, holds a family photo taken before the war, as she poses for a portrait in Warsaw January 12, 2015. Stroinska was 12-years-old during the Warsaw Uprising when she and her sister were sent from their house to a camp in Pruszkow before she was moved alone by train to Auschwitz-Birkenau. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Danuta Bogdaniuk-Bogucka (maiden name Kaminska), 80, poses for a portrait in Warsaw January 5, 2015. Bogdaniuk-Bogucka was 10-years-old when she was sent to Auschwitz-Birkenau camp with her mother. Bogdaniuk-Bogucka was part of Josef Mengele's experiments when she was in Auschwitz. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Janina Reklajtis, 80, who was registered with camp number 83043, holds a photo of herself taken during the war as she poses for a portrait in Warsaw January 7, 2015. Reklajtis was 12-years-old during the Warsaw Uprising when she and her mother were sent to Auschwitz-Birkenau. They were sent to a labour camp in Berlin in January 1945 and were kept there until they were liberated. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Laszlo Bernath, 87, poses for a portrait in Budapest January 12, 2015. Bernath credits his father being a practical man with his survival of Auschwitz. He was 15 when they were taken but his father told him to lie about his age so that they would not be separated. Even whilst in the camp, Bernath had no idea about the gas chambers. REUTERS/Laszlo Balogh 

Auschwitz death camp survivor Laszlo Bernath, 87, holds up a picture of his family, who were all killed in the concentration camp during World War Two, in Budapest, January 12, 2015. Bernath credits his father being a practical man with his survival of Auschwitz. He was 15 when they were taken but his father told him to lie about his age so that they would not be separated. Even whilst in the camp, Bernath had no idea about the gas chambers. REUTERS/Laszlo Balogh 

Auschwitz death Camp survivor Jacek Nadolny, 77, who was registered with camp number 192685, poses for a portrait in Warsaw January 7, 2015. Nadolny was seven during the Warsaw Uprising, when he was sent with his family to Auschwitz-Birkenau by train. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Jacek Nadolny, 77, who was registered with camp number 192685, holds up a wartime photo of his family, as he poses for a portrait in Warsaw January 7, 2015. Nadolny was seven during the Warsaw Uprising, when he was sent with his family to Auschwitz-Birkenau by train. In January 1945 the family was moved to a labour camp in Berlin. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Erzsebet Brodt, 89, poses for a portrait in Budapest January 12, 2015. Brodt was 17-years-old when she was sent to Auschwitz-Birkenau along with her family. Remembering the journey to the camp she said that those who were "sick or about to give birth were forced out and put into one wagon. When the wagon was opened in Auschwitz we saw that everyone was dead inside." REUTERS/Laszlo Balogh 

Auschwitz death camp survivor Erzsebet Brodt, 89, holds a picture of her family, who were killed in the concentration camp during World War Two, as she poses for a portrait in Budapest January 12, 2015. Brodt was 17-years-old when she was sent to Auschwitz-Birkenau along with her family. Remembering the journey to the camp she said that those who were "sick or about to give birth were forced out and put into one wagon. When the wagon was opened in Auschwitz we saw that everyone was dead inside." REUTERS/Laszlo Balogh 

Auschwitz death camp survivor Jerzy Ulatowski, 83, who was registered with camp number 192823, poses for a photo in Warsaw January 12, 2015. Ulatowski was taken by train to Auschwitz-Birkenau when he was 13-years-old. In January 1945 he managed to escape with his family, as there was a lack of power in the barbed wire surrounding the camp. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Imre Varsanyi, 86, holds up a photo of fellow survivors during World War Two, as he poses for a portrait in Budapest January 12, 2015. Varsanyi was 14-years-old when he and his family were sent to Auschwitz-Birkenau. He was the only member of his family to survive. After the war Varsanyi did not talk about Auschwitz for 60 years because he felt ashamed of having survived. REUTERS/Laszlo Balogh 

Auschwitz death camp survivor Barbara Doniecka, 80, who was registered with camp number 86341, poses for a photo in Warsaw January 12, 2015. Doniecka was 12-years-old during the Warsaw Uprising when she was sent to Auschwitz-Birkenau with her mother. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Barbara Doniecka, 80, who was registered with camp number 86341, holds up wartime photo of herself, as she poses for a photograph in Warsaw January 12, 2015. Doniecka was 12-years-old during the Warsaw Uprising when she was sent to Pruszkow camp. She was then sent by train to Auschwitz-Birkenau. REUTERS/Kacper Pempel 

Auschwitz death camp survivor Zofia Wareluk, 70, poses for a portrait in Warsaw January 12, 2015. Wareluk was born in Auschwitz two weeks before the camp was liberated. Her mother was sent to Auschwitz when she was four months pregnant. REUTERS/Kacper Pempel