Cashiers sought for health study

Cashiers sought for health study
http://www.newsobserver.com/2011/08/01/1382388/cashiers-sought-for-health-study.html

"Researchers at the National Institute of Environmental Health Sciences are recruiting cashiers willing to have blood and urine samples taken to be tested for a potentially toxic chemical - bisphenol A, or BPA for short - that is used to manufacture the slick receipt paper many cashiers handle on a daily basis."