Raebel MA, Carroll NM, Simon SR, Andrade SE, Feldstein AC, Lafata JE, Nelson WW, Chan KA, Gunter MJ, Tolsma D, Platt R. Liver and thyroid monitoring in ambulatory patients prescribed amiodarone in 10 HMOs. J Manag Care Pharm. 2006 Oct; 12(8):656-64.