?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Ratih&rft.au=Oemiati%2C+Ratih&rft.aulast=Oemiati&rft.date=June+2013&rft.pages=82-88&rft.title=Media+Penelitian+dan+Pengembangan+Kesehatan&rft.volume=23&rft.issue=2&rft.atitle=Kajian+Epidemiologis+Penyakit+Paru+Obstruktif+Kronik+(PPOK)&rft.issn=0853-9987&rft.genre=article