Review Best practices for extractables and leachables in orally inhaled and nasal drug products: an overview of the PQRI recommendations.
Norwood DL, Paskiet D, Ruberto M, Feinberg T, Schroeder A, Poochikian G, Wang Q, Deng TJ, DeGrazio F, Munos MK, et al. Pharm Res. 2008 Apr; 25(4):727-39. Epub 2008 Jan 9.