Supporters of Venezuela's President Hugo Chavez pray for his health during a Mass at the Ministry of Education headquarters in Caracas, Venezuela, Tuesday, Feb. 19, 2013. Chavez is back in Venezuela after 10 weeks of cancer treatment in Cuba, but he remained silent and out of sight on Tuesday, closed away in a tightly guarded military hospital, leaving the nation to speculate about whether he can still govern, and for how long. (AP Photo/Ariana Cubillos)

Associated Press
Supporters of Venezuela's President Hugo Chavez pray for his health during a Mass at the Ministry of Education headquarters in Caracas, Venezuela, Tuesday, Feb. 19, 2013. Chavez is back in Venezuela after 10 weeks of cancer treatment in Cuba, but he remained silent and out of sight on Tuesday, closed away in a tightly guarded military hospital, leaving the nation to speculate about whether he can still govern, and for how long. (AP Photo/Ariana Cubillos)
Supporters of Venezuela's President Hugo Chavez pray for his health during a Mass at the Ministry of Education headquarters in Caracas, Venezuela, Tuesday, Feb. 19, 2013. Chavez is back in Venezuela after 10 weeks of cancer treatment in Cuba, but he remained silent and out of sight on Tuesday, closed away in a tightly guarded military hospital, leaving the nation to speculate about whether he can still govern, and for how long. (AP Photo/Ariana Cubillos)
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