“…Semiquantitative estimates of dermal exposure were used in a study of adverse health effects among tannery workers (17,18). The assessment of skin exposure was based on a three-point scale of no contact with the agent of interest, moderate contact (infrequent skin contact with the agent, eg, contact occurred during specific activities that were not part of the daily work routine), and frequent contact (frequent skin contact, eg, regular contact was unavoidable due to the activities performed daily).…”