Singapore legislation
Section 11
Section 11
Prohibition
A medical practitioner who —
(a)
is the husband, wife, father, father‑in‑law, mother, mother‑in‑law, son, son‑in‑law, daughter, daughter‑in‑law, brother, brother‑in‑law, sister or sister‑in‑law of the patient;
(b)
stands in a fiduciary relationship to the patient; or
(c)
is treating the patient,must not sign any order under this Act.