Analysis of information sources in references of the Wikipedia article "Medicine man" in English language version.
There is probably no more mysterious or interesting portion of the religious or 'medicinal' equipment of the Apache Indian, whether he be medicine-man or simply a member of the laity, than the 'izze-kloth' or medicine cord... the Apache look upon these cords as so sacred that strangers are not allowed to see them, much less handle them or talk about them....