div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=more-for-crowd-controlhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: More for crowd control loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader037vdocumentsmxreader037viewer2022100502575068801a28ab0f07b0738fhtml5thumbnails1jpg width=140 height=200 divp© 1990 Nature Publishing Grouppdiv