title: Study of hypertension in urban bus drivers questioned. Study design as source of bias.
authors: G
authors: G
authors: Li
mesh_terms: D015982:Bias; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D012107:Research Design / Q000592:standards*; D013315:Stress, Psychological / Q000150:complications*; D014186:Transportation