What does Akpors hope to achieve this time?

After heart surgery, Akpors told his doctor that his wife was afraid to have sex with him. The doctor assured him that it would do him no harm. Akpors asked him to give it to him in writing, and the doctor wrote furiously and gave it to him. It said,

DOCTOR: “Dear Mrs Akpors, your husband is in such remarkable good physical condition, I wouldn’t be surprised if he could not make love two or three times every night”.
Akpors was delighted, but requested a small amendment.

AKPORS: “Could you take out Mrs Akpors, and make it, “To whom it may concern?”.

WHAT DOES AKPORS WANT TO ACHIEVE THIS TIME?