Which of the following statements about consent is 'NOT TRUE':

For aificial insemination, consent of both the spouses must be taken in writing and the whole procedure should be explained in detail. Other medico legal aspects regarding this are: identity of donor or recipient should not be revealed to each other, doctor conducting aificial insemination should not be involved in childbih and semen should be obtained only through masturbation not by sexual intercourse. A person above 18 years of age can give a valid consent to suffer any harm which may result from an act not intended or not known to cause death or grievous hu. Voluntary sterilization procedure is performed on a married person with the consent of both husband and wife. According to doctrine of emergency, a doctor can give the treatment without taking consent from a patient that is gravely sick, unconscious or mentally ill. According section IPC 92 any procedure done in the benefit of a person without his consent in circumstances such as patient being impossible to sign consent, or if he is incapable of giving consent or has no guardian or other person in lawful charge of him is not considered an offence. Ref: Concise Textbook Of Forensic Medicine & Toxicology By Sharma page 113, Textbook of Forensic Medicine and Toxicology By Jaypee Brothers, page 50.