?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Supandi&rft.au=Supandi%2C+Supandi&rft.aulast=Supandi&rft.atitle=SIMULTANEOUS+ANALYTICAL+METHOD+DEVELOPMENT+OF+6-MERCAPTOPURINE+AND+6-METHYLMERCAPTOPURINE+IN+DRIED+BLOOD+SPOT+USING+ULTRA+PERFORMANCE+LIQUID+CHROMATOGRAPHY+TANDEM+MASS+SPECTROMETRY&rft.issn=0975%E2%80%937058&rft.title=International+Journal+of+Applied+Pharmaceutics&rft.genre=article