don't pass NULL
don't pass NULL

Takishima/bart,sidward/bart,sdimoudi/bart,Takishima/bart,sidward/bart,mrirecon/bart,sdimoudi/bart,sidward/bart,mrirecon/bart,Takishima/bart,sidward/bart,sidward/bart,sdimoudi/bart,Takishima/bart,sdimoudi/bart,mrirecon/bart,Takishima/bart,mrirecon/bart,sdimoudi/bart,mrirecon/bart