Then, the overall risk of bias of each included study was evaluated as either: low (all criteria were of low risk), unclear (at least one criterion was evaluated to be of unclear risk but no criterion of high risk), or high (at least one criterion with high risk of bias)
DOI: 10.1037 Bahji A, Meyyappan AC, Hawken ER, Tibbo PG
Despite this trend, the long-term effects of vaping remain poorly understood, and there is a lack of epidemiological evidence linking e-cigarette use to lung cancer
while still in high school, he had fighters on his payroll
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Radio broadcasting student Alex Gonzales also expressed confusion over the smoking rules, saying he often sees students smoking around N-building, right next to no smoking signs