“We must note, however, that all these findings are etiologically nonspecific.”
“Gastric hypoacidity is associated with quantitative bacterial overgrowth and opportunistic enteric infections and may be etiologically important in the pathophysiology of the chronic diarrhea seen in some AIDS patients.”
“They are also limited by the small proportion of cellular telephone users, and, particularly, the small numbers of users with an etiologically relevant time period.”