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Pope Francis looks on as he leads a mass in parish church of San Tommaso on the outskirts of Rome on February 16, 2014. AFP PHOTO / Andreas SOLARO

Pope Francis leads a mass at the parish church of San Tommaso on the outskirts of Rome on February 16, 2014. AFP PHOTO / Andreas SOLARO

Pope Francis smiles as he meets with Cyprus President Nicos Anastasiades during a private audience in the pontiff's studio, at the Vatican, Saturday,...

Pope Francis (R) shakes hands with Greek-Cypriot President Nicos Anastasiades during a private audience in the pontiff's library on February 15, 2014...

Pope Francis (R) shakes hands with Greek-Cypriot President Nicos Anastasiades during a private audience in the pontiff's library on February 15, 2014...

Pope Francis (C), greets Greek-Cypriot President Nicos Anastasiades (L) and his wife, during a private audience in the pontiff's library on February 1...

Pope Francis (C), greets Greek-Cypriot President Nicos Anastasiades (L) and his wife , during a private audience in the pontiff's library on February...

Mandatory Credit: Photo by AGF s.r.l./REX (3571670d) Pope Francis I Papal audience, Vatican City, Rome, Italy - 14 Feb 2014

Mandatory Credit: Photo by AGF s.r.l./REX (3571670h) Pope Francis I Papal audience, Vatican City, Rome, Italy - 14 Feb 2014

Mandatory Credit: Photo by AGF s.r.l./REX (3571670i) Pope Francis I Papal audience, Vatican City, Rome, Italy - 14 Feb 2014

Mandatory Credit: Photo by AGF s.r.l./REX (3571670j) Pope Francis I Papal audience, Vatican City, Rome, Italy - 14 Feb 2014

Mandatory Credit: Photo by AGF s.r.l./REX (3571670k) Pope Francis I Papal audience, Vatican City, Rome, Italy - 14 Feb 2014

Pope Francis holds a rose tossed by a faithful in St. Peter's Square at the Vatican, Friday, Feb. 14, 2014. Pope Francis met a group of engaged couple...

Pope Francis greets couples gathered in St. Peter's Square at the Vatican, Friday, Feb. 14, 2014. Pope Francis met a group of engaged couples on Vale...

Pope Francis holds a rose tossed by a faithful in St. Peter's Square at the Vatican, Friday, Feb. 14, 2014. Pope Francis met a group of engaged couple...

Pope Francis greets faithful as he leaves St. Peter's Square at the Vatican, Friday, Feb. 14, 2014. Pope Francis met a group of engaged couples on Va...

Pope Francis greets faithful as he leaves St. Peter's Square at the Vatican, Friday, Feb. 14, 2014. Pope Francis met a group of engaged couples on Va...

Pope Francis greets faithful as he leaves St. Peter's Square at the Vatican, Friday, Feb. 14, 2014. Pope Francis met a group of engaged couples on Va...

Pope Francis meets with a young couple during a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said...

Pope Francis arrives for a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around 20...

Pope Francis laughs during a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around...

Pope Francis smiles during a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around...

Pope Francis smiles during a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around...

Pope Francis arrives for a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around 20...

Pope Francis arrives for a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around 20...

Pope Francis arrives for a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around 20...

Pope Francis arrives for a Valentine's Day celebration in St Peter's square at the Vatican on February 14, 2014. The Vatican said there were around 20...

In this photo provided by the Vatican newspaper L'Osservatore Romano, Pope Francis meets participants in an audience with inmates of the Pisa and Pian...

In this photo provided by the Vatican newspaper L'Osservatore Romano, Pope Francis meets participants in an audience with inmates of the Pisa and Pian...

In this photo provided by the Vatican newspaper L'Osservatore Romano, Pope Francis meets participants in an audience with inmates of the Pisa and Pian...

In this photo provided by the Vatican newspaper L'Osservatore Romano, Pope Francis meets participants in an audience with inmates of the Pisa and Pian...

Mandatory Credit: Photo by AGF s.r.l./REX (3571744a) Pope Francis I Public Papal Audience, St. Peter's Square, Rome, Italy - 12 Feb 2014

Mandatory Credit: Photo by AGF s.r.l./REX (3571744b) Pope Francis I Public Papal Audience, St. Peter's Square, Rome, Italy - 12 Feb 2014

Mandatory Credit: Photo by AGF s.r.l./REX (3571744c) Pope Francis I Public Papal Audience, St. Peter's Square, Rome, Italy - 12 Feb 2014

Mandatory Credit: Photo by AGF s.r.l./REX (3571744d) Pope Francis I Public Papal Audience, St. Peter's Square, Rome, Italy - 12 Feb 2014

Pope Francis gives the thumbs up as he arrives on his pope-mobile for his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb...

Pope Francis kisses a child as he arrives on his pope-mobile for his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12,...

Pope Francis arrives on his pope-mobile for his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12, 2014. (AP Photo/Ales...

Pope Francis is greeted by faithful as he arrives for his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12, 2014. (AP...

Pope Francis talks with Archbishop Georg Gaenswein during his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12, 2014....

Pope Francis is greeted by a cardinal at the end of his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12, 2014. (AP Ph...

Pope Francis kisses a child as leaves after his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12, 2014. (AP Photo/Ales...

Pope Francis hugs a child at the end of his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12, 2014. (AP Photo/Alessand...

Pope Francis kisses a child as leaves after for his weekly general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 12, 2014. (AP Photo/...

Pope Francis (R) speaks with pilgrims gathered at St. Peter's square in the Vatican, upon his arrival to lead the weekly general audience on February...

Pope Francis arrives to lead the weekly general audience at St. Peter's square in the Vatican, on February 12, 2014. AFP PHOTO / VINCENZO PINTO

Pope Francis blesses a child as he arrives at St. Peter's square in the Vatican, to lead his weekly general audience on February 12, 2014. AFP PH...

Pope Francis kisses a sick child during his general audience at St Peter's square in the Vatican on February 12, 2014. AFP PHOTO / VINCENZO PINTO

Pope Francis (R) speaks with German archbishop Georg Ganswein at Saint Peter's square as he leaves his weekly general audience on February 12, 2014 in...

Pope Francis addresses the crowd from the window of his appartment during his Sunday Angelus prayer on February 9, 2014 at the Vatican. AFP PHOTO / T...