Explain forensic medicine's role in extra-judicial killings and disappearances.

The custody's medical window: the detainee's examination (the arrest's-and-detention's medical screening — the injuries' baseline: the pre-existing-vs-custodial differential); the access's right (the medical examination of the person in custody — the law's face (the Constitutional-and-CPC provisions: the detainee's medical examination rights)); the documentation (the custody-period injuries' record — the torture's evidence base); the periodic examinations (the prolonged custody's monitoring).