LETR的全称：Linking Evidence to Recommendations (National Institute for Health and Clinical Excellence; UK) | 中文意思：───证据链接到建议(国家健康与临床优化研究所；英国)
LETR的全称：Law Enforcement Torch Run (for Special Olympics) | 中文意思：───(特奥会)的执法人员火炬慈善跑
