Question: is this a 2) strong advice, 1) weak advice 0) no advice?

Li et al summarize multiple populations of others researchers to analyze the association of the common polymorphism C667T in methylenetetrahydrofolate reductase gene with CHD risk, the results indicate that methylenetetrahydrofolate reductase C667T polymorphism is relevant to CHD with obvious heterogeneity in a meta-analysis[citation]. 
user
This is no advice
assistant