1、https://publications.aap.org/pediatrics/article-abstract/118/2/e279/68912/Escalator-Related-Injuries-Among-Children-in-the?redirectedFrom=fulltext?autologincheck=redirected?nfToken=00000000-0000-0000-0000-000000000000
2、https://www.verywellfamily.com/elevator-and-escalator-hazards-2633667