Stained Teeth Smoking exposes your teeth to both tobacco and nicotine which can make your teeth turn yellow in a very short time and brown after years of smoking
For example, if we want to explore whether high concentrations of vehicle exhaust impact incidence of asthma in children, the concentration of vehicle exhaust is the independent variable while asthma incidence is the dependent variable
Stage 4 mesothelioma less frequently spreads to distant locations, but may spread throughout both lungs or to the bones or brain
Emulating the Ku Klux Klan, members wore white sashes and masks that served less to hide identities than to enable witnesses to swear they had not recognized individuals they might have seen
Data obtained from pooled 20142018 National Health Interview Surveys
Gao L, Xu T, Huang G, Jiang S, Gu Y, Chen F (2018) Oral microbiomes: more and more importance in oral cavity and whole body