RT Journal Article SR Electronic T1 Polio: from eradication to systematic, sustained control JF BMJ Global Health JO BMJ Global Health FD BMJ Publishing Group Ltd SP e001633 DO 10.1136/bmjgh-2019-001633 VO 4 IS 4 A1 Oliver Razum A1 Devi Sridhar A1 Albrecht Jahn A1 Shehla Zaidi A1 Gorik Ooms A1 Olaf Müller YR 2019 UL http://gh.bmj.com/content/4/4/e001633.abstract AB