Although schools were purposively stratified by gender composition to maximise diversity, selection relied on local gatekeepers, which may have introduced recruitment bias despite efforts to include staff and pupils of different ages, backgrounds, and smoking exposures
Oliva M, Demanelis K, Lu Y, Chernoff M, Jasmine F, Ahsan H, et al
Mincer HH, Coleman SA, Hopkins KP: Observations on the clinical characteristics of oral lesions showing histologic epithelial dysplasia
Its excellent compact design fits great on any poolside or patio
Grace's initial purpose as an undercover agent for the Birmingham Police was to get close to Tommy and learn about the inner workings of his organization, but in typical Libra fashion, she falls in love with him
The relationship is dose dependent, she emphasises