input: [HOLEP] 1 in 10000 [TURP] 10-15 in 100 [Key Factors] 
output: Blood Transfusion
options: S i z e o f P r o s t a t e
options: P a t i e n t s o n a n t i c o a g u l a n t s
options: I r r i g a t i o n
options: C a t h e t e r i z a t i o n
options: B l o o d T r a n s f u s i o n
options: R e c o v e r y
options: H o s p i t a l s t a y
options: R i s k o f S t r i c t u r e , B l a d d e r