Abstract Watson-Crick L systems are string generating formal models obtained by augmenting Lindenmayer with the morphism inspired complementarity principle. The is controlled a trigger —a boolean condition eventually met generated word. Despite their simplicity, (D)0 have interesting mathematical properties, strong generative power, and they can also characterize some open decision problems. Fu...

BACKGROUND Statins reduce LDL cholesterol and prevent vascular events, but their net effects in people at low risk of vascular events remain uncertain. METHODS This meta-analysis included individual participant data from 22 trials of statin versus control (n=134,537; mean LDL cholesterol difference 1·08 mmol/L; median follow-up 4·8 years) and five trials of more versus less statin (n=39,612; ...