is believed that it was the long term exposure to Roentgen Rays during WWI, that caused aplastic anemia, as Marie for 4 years assisted in examining wounded patients through Roentgen machines. After mother's death After Marie Curie's death, Ève decided to express her love by writing a biography. To this end, she temporarily withdrew from social life and moved to a small flat in Auteuil, Yvelines, where she gathered and sorted documents and letters left by Marie. In Autumn 1935, she visited her family in Poland, looking for information about her mother's childhood and youth. The fruit of this work was the biography Madame Curie, simultaneously published in France, Britain, Italy, Spain, the United States and other countries in 1937. Madame Curie was instantly popular; in many countries including the United States, it was a bestseller. In the U.S. it won the third annual National Book Award for Non-Fiction voted by the American Booksellers Association. There was a film adaptation in 1943 by Metro-Goldwyn-Mayer, with Greer Garson in the title role. Ève became more and more engaged in literary and journalistic work. Apart from her mother's biography, she published musical reviews in the Candide weekly and articles on theater, music, and film in other Paris newspapers. Second World War After the outbreak of the Second World War in 1939, the novelist and playwright Jean Giraudoux, who had become the French Information Commissioner (Commissaire général à l'information) in the same year, appointed Ève Curie head of the feminine division in his office. After Germany invaded France, Ève left Paris on June 11, 1940, and after the surrender of France she fled with other refugees on board an overcrowded ship to England, which was strafed by German aircraft. There she joined the Free French Forces of General Charles de Gaulle and started her active fight against Nazism, which resulted in the Vichy government's depriving her of French nationality and confiscating her property in 1941. Ève Curie spent most of the war years in Britain, where she met Winston Churchill, and the United States, where she gave lectures and wrote articles to American newspapers (mostly the New York Herald Tribune). In 1940 she met Eleanor Roosevelt at the White House. Inspired by this visit, she later gave a series of lectures on French Women and the War; in May 1940 The Atlantic Monthly published her essay under the same title. From November 1941