"The determination of the need for legal services and the choice of a lawyer are extremely important decisions and should not be based solely upon advertisements or self-proclaimed expertise." Memberships and offices in legal fraternities and legal societies, technical and professional licenses, and memberships in scientific, technical and professional associations and societies of law or field of practice do not mean that a lawyer is a specialist or expert in a field of law, nor do they mean that such lawyer is necessarily any more expert or competent than any other lawyer. All potential clients are urged to make their own independent investigation and evaluation of any lawyer being considered. This notice and disclosure is required by rule of the Supreme Court of Iowa.