Abstaining from operating if the success percentage is low

Q 2: Is it permissible to refuse undergoing an operation when the medical success rate expected is very low, (not exceeding 30%)? However, medically speaking, the patient will definitely die, if he does not undergo the operation. (Part No. 25; Page No. 43

A: According to the legal proofs, a patient should seek remedy even if the success rate is low. May Allah cure him.