Hyppo Audouy

~ as ~

Himself - Narrator (voice)

Stéphane Chassagne

~ as ~

Himself - Urologist

Martin Knight

~ as ~

Himself - Bioengineer

Steven Soifer

~ as ~

Himself - Psychologist

Sally Magnusson

~ as ~

Herself - Writer

Martin Lara

~ as ~

Himself - Urotherapist

Wu Yunhua

~ as ~

Himself - Therapist

Ximin Du

~ as ~

Himself - Urotherapist

Duaqing Pei

~ as ~

Himself - Researcher

Shaker Mousa

~ as ~

Himself - Researcher