Sentence:The studies revealed that skin [e1]irritation[/e1] from [e2]soaps[/e2], inaccessibility to supplies or sinks, and insufficient time to wash hands between every patient care contact were the main reasons given by healthcare workers for lack of handwashing compliance.
 e1: irritation. 
 e2 : soaps.
Answer: Cause-Effect(e2,e1)