Malena, 7, looks at Belgian clown Lili Bellule at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels January 27, 2015. The hospital offers performances by musicians and clowns as a form of therapy to help children cope with dealing with the stress and fear caused by hospitalization. (Photo by Yves Herman/Reuters)

Belgian clowns Rondelle (C) and Bretzel (R) interact with six-month-old baby Lucas, who is hospitalized at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels February 10, 2015. (Photo by Yves Herman/Reuters)

Belgian clown Gigi performs at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 20, 2015. (Photo by Yves Herman/Reuters)

Belgian clown Rondelle adjusts the hat of Zeinab from Lebanon at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels January 20, 2015. (Photo by Yves Herman/Reuters)

Belgian clowns Juju (L) and Lili Bellule (R) pose for a souvenir photo with a child at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 27, 2015. (Photo by Yves Herman/Reuters)

Cimeo, nine-months-old, looks towards musician Orphise as she plays the guitar at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 15, 2015. (Photo by Yves Herman/Reuters)

Belgian clowns Gigi (back) and Lili Bellule (front) perform at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 20, 2015. (Photo by Yves Herman/Reuters)

Belgian clowns Lili Bellule (L), Gigi (C) and Rondelle perform at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 20, 2015. (Photo by Yves Herman/Reuters)

Zeinab (R) from Lebanon imitates musician Orphise as they both raise maracas at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 22, 2015. (Photo by Yves Herman/Reuters)

Mohamed, 5, looks at a soap bubble at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 22, 2015. (Photo by Yves Herman/Reuters)

Zeinab (L) from Lebanon touches the red nose of Belgian clown Lili Bellule at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels, January 27, 2015. (Photo by Yves Herman/Reuters)

Malena, 7, looks at Belgian clowns Jupette (L) and Lili Bellule at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels January 27, 2015. (Photo by Yves Herman/Reuters)

Mohamed, 5, watches as Belgian clown Jupette plays guitar at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels January 27, 2015. (Photo by Yves Herman/Reuters)

Belgian clowns Gigi (L), Rondelle (C) and Lili Bellule (R) perform at the pediatric department of the Hopital Erasme at the Universite Libre de Bruxelles (ULB), in Brussels January 20, 2015. (Photo by Yves Herman/Reuters)