Gupta P C, Mehta F S, Pindborg J J
Br Med J (Clin Res Ed). 1984 Oct 6;289(6449):865-6. doi: 10.1136/bmj.289.6449.865.
A 10 year follow up study was performed of tobacco usage and oral disease in a random sample of 10 169 persons in Srikakulam district between 1967 and 1976. Age adjusted mortality rates in those who indulged in reverse smoking of chuttas (coarse cheroots) were nearly twice those of non-users of tobacco. Oral cancer explained only a small fraction of the excess mortality but reliable information was not available for other causes of death.
1967年至1976年间，对斯里卡库拉姆区10169人的随机样本进行了一项关于烟草使用和口腔疾病的10年随访研究。沉溺于倒抽chuttas（粗雪茄）的人群中，年龄调整后的死亡率几乎是非烟草使用者的两倍。口腔癌仅占额外死亡率的一小部分，但其他死因的可靠信息并不可得。
