Are motorists in general stopping within the new speed limits?

汽车司机一般都遵守新的限速规定吗？

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Another study, also published in the journal Nicotine and Tobacco Research, suggests the benefits of quitting smoking could be felt within weeks of stopping.

BBC: Smoking: The sex divide

Serotonin syndrome often resolves within 24 hours of stopping any medication that increases serotonin.

CNN: Mixing migraine, depression drugs poses risk of serotonin syndrome

The WHI survey also showed that within five years from stopping HRT, the breast cancer risk returns to normal.

BBC: NEWS | Health | Health scares take their toll on HRT