These scientists have focused on both what are known as horizontal structures (proximal variables experienced by an individual, such as the family structure and work environment) and vertical structures (distal variables, such as larger scale political and economic forces), as well as how these two interact
Spains main hospitality-sector lobby said in a statement it disagreed with the measure, which would have very limited effectiveness, as it could drive smokers indoors to places such as private homes, thereby increasing exposure to second-hand smoke
During the game of Pictionary, one player continually guesses the same thing over and over despite it being obviously wrong (once a right answer is given, that round ends, so repetition is pointless)
Complicating this further are consumer behaviors that dictate exposure frequency, aerosol mass, inhalation volume, and particle deposition (168, 169)