Review Reference values for hair cotinine as a biomarker of active and passive smoking in women of reproductive age, pregnant women, children, and neonates: systematic review and meta-analysis.
Florescu A, Ferrence R, Einarson TR, Selby P, Kramer M, Woodruff S, Grossman L, Rankin A, Jacqz-Aigrain E, Koren G. Ther Drug Monit. 2007 Aug; 29(4):437-46.