Bioanalytical validation for the determination of fluticasone propionate, salmeterol and tiotropium in human plasma at the sub pg/mL level using UPLC/MS/MS. Issue 1 (January 2017) - Joung, Sun Koung; Kang, So Young; Ma, Kyung Na; Kim, Sun A.; Cho, Kyunghee; La, Sookie; Lee, Hee Joo