We also excluded diseases that occur very infrequently or are nonexistent (defined as having an annual mean of <4 cases during 2008 2012).
Violence cases as defined here were infrequently reported, accounting for 0.25% of all serious adverse drug events, and confined to a relatively small number of drugs.
Rare (or infrequently used) codons are arbitrarily defined here as having w values of less than 0.8.
In contrast to cigarette smoking, the causative relationship between hypertension and ING is less defined; (i) not infrequently, ING can be encountered in the absence of well-established hypertension [ 6] and (ii) hypertension could arguably be considered the result rather than the cause of renal endothelial cell injury [ 12].
Fewer students will find themselves being forced to memorize hundreds of "SAT words" (these words are used so infrequently that they have literally become defined by their appearance in the SAT), so that they are prepared with one or two of them appear on the exam.
The expansion of GSCs in our defined cell culture medium also infrequently generated differentiated progeny, which represented a small fraction of cells.
†Reported as frequencies and defined as follows: 1, daily; 2, infrequently (weekly); 3, occasionally (monthly); 4, almost never (yearly).
An 1819 history averred that Zombi is the name for an Angolan diety; in 1872, the early student of Americanisms Maximilian Schele de Vere defined the proper noun as "a phantom or a ghost, not infrequently heard in the Southern States in nurseries and among the servants" and speculated that "the word is a Creole corruption of the Spanish sombra".
Youth who smoked infrequently in the context of social gatherings, and often in association with alcohol were commonly defined as 'social' smokers, regardless of the regularity of their smoking behaviour.
In this investigation, non-smokers were defined as persons who had never smoked during their lifetime or who had only smoked infrequently at a young age.
