A chiropractor who has given in-person, unsolicited advice to a lay person that he/she should obtain chiropractic care shall not accept employment resulting from that advice except that:

(1) A chiropractor may accept employment by a close friend, relative, former patient (if the advice is germane to the former treatment), or one whom the chiropractor reasonably believes to be a patient; and

(2) Without affecting his/her right to accept employment, a chiropractor may speak publicly or write for publication on chiropractic topics so long as he/she does not emphasize his/her own professional experience or reputation and does not undertake to give individual advice.