div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: c Step ccccccccccc 35 25 15 05 ccccccc 52% …c Step ccccccccccc 35 25 15 05 ccccccc 52% 31% Lancet 2002 cccccccccccccccccccccc cc c cc cc 40 30 18% o 1998 cc c 15P-FA src=https:reader036fdocumentsusreader036viewer20220710145fcd30a0ed794477a174afaahtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv