The witnessing of a durable power of attorney for health care shall involve the principal signing, or acknowledging the principal's signature, at the end of the instrument in the presence of each witness. Then, each witness shall subscribe the witness's signature after the signature of the principal and, by doing so, attest to the witness's belief that the principal appears to be of sound mind and not under or subject to duress, fraud, or undue influence. The signatures of the principal and the witnesses under this division are not required to appear on the same page of the instrument.
R.C. § 1337.12