RT Journal Article SR Electronic T1 COP27 climate change conference: urgent action needed for Africa and the world JF BMJ Leader JO BMJ Leader FD BMJ Publishing Group Ltd SP 251 OP 252 DO 10.1136/leader-2022-000696 VO 6 IS 4 A1 Chris Zielinski YR 2022 UL http://bmjleader.bmj.com/content/6/4/251.abstract AB