Residents sleep in the street after an earthquake in Port-au-Prince January 13, 2010. REUTERS/Eduardo Munoz

A injured child receives medical treatment after an earthquake in Port-au-Prince January 13, 2010. REUTERS/Eduardo Munoz

A resident waits for medical treatment after an earthquake in Port-au-Prince January 13, 2010. REUTERS/Kena Betancur

Residents search for victims after an earthquake in Port-au-Prince January 13, 2010. REUTERS/Eduardo Munoz

A car damaged after an earthquake struck is seen in Port-au-Prince in this January 12, 2010 video grab. REUTERS/Reuters TV

People stand near the ruins of a building, which was damaged after a major earthquake struck, in Port-au-Prince in this January 12, 2010 video grab. REUTERS/Reuters TV

People walk along a street lined with buildings, which were destroyed after a major earthquake struck, in Port-au-Prince in this January 12, 2010 video grab. REUTERS/Reuters TV

An injured person is pulled from a structure that collapsed after an earthquake in Port-au-Prince in this January 12, 2010 video grab. Credit: REUTERS/Reuters TV

A fire breaks out near a building, which was damaged after a major earthquake struck, in Port-au-Prince in this January 12, 2010 video grab. REUTERS/Reuters TV

People react as a woman collapses on a street after a major earthquake struck, in Port-au-Prince in this January 12, 2010 video grab. REUTERS/Reuters TV

A man calls for help while being trapped at the Port-au-Prince University, after a major earthquake struck, in Port-au-Prince in this January 13, 2010 video grab. REUTERS/Reuters TV