Frontiers: Smoke and Mirrors: Impact of E-cigarette Taxes on Underage Social Media Posting
利用社交媒体发帖作为未成年人消费数据的替代指标，量化电子烟税对未成年人行为的影响。
This work uses social media postings as a proxy for missing legal underage consumption data to quantify e-cigarette tax effects.