Detailed Instructions: Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).
Problem:Abstract: The incidence of air under the diaphragm in CAPD patients is very low, and causes directly attributable to standard CAPD techniques are even lower. Bowel perforation generally causes a larger volume of air collection under the diaphragm.
Which is the apt title for the abstract? option1: Is air under the diaphragm a significant finding in CAPD patients? option2: Contribution of topical tar oil to ultraviolet B phototherapy for psoriasis [letter]
Solution:
Is air under the diaphragm a significant finding in CAPD patients?