A chiropractor may not engage in solicitation, including but not limited to, in-person, telephone, or direct mail solicitation which: Amounts to fraud, undue influence, intimidation, or overreaching; Contains statements which would be improper under Regulation .03 of this chapter. A chiropractor shall also be accountable under this regulation if the chiropractor uses an agent, partnership, professional association, or health maintenance organization to implement actions prohibited by this regulation.