Monica Besra, 35, poses with a portrait of Mother Teresa at her home in Nakor village, 280 miles north of Kolkata, in December 2002. Besra claimed that prayers to Mother Teresa resulted in her recovery from abdominal cancer, something documented by the Vatican as a miracle. Rana Chakraborty/AP hide caption

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Rana Chakraborty/AP

How The Catholic Church Documented Mother Teresa's 2 Miracles

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Pope Francis looks on during a penitential ceremony on March 4 at St. Peter's Basilica in Vatican City. Francis has imposed new financial rules on those working to promote the canonization of potential saints. Tiziana Fabi/AFP/Getty Images hide caption

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Tiziana Fabi/AFP/Getty Images

Tapestry portraits of Pope John Paul II (left) and Pope John XXIII hang from balconies on the facade of St. Peter's Basilica in Rome. On Sunday, the two pontiffs will officially be declared saints. Claudio Peri/EPA/Landov hide caption

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Claudio Peri/EPA/Landov