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: Bilateral optic atrophy is reported in two patients who, although they were long-standing users of the leaves of Catha edulis, had chewed larger quantities than usual. Since the leaves of this plant are used widely throughout its native area as the source of a mildly stimulant narcotic, the effect in these cases may be an idiosyncratic reaction to an unusually large dose. 
 Which is the apt title for the abstract? option1: The presumed neurotoxic effects of Catha edulis--an exotic plant now available in the United Kingdom. option2: Assessment of left ventricular diastolic function: comparison of Doppler echocardiography and gated blood pool scintigraphy [published erratum appears in J Am Coll Cardiol 1987 May;9(5):1199]
Solution:
The presumed neurotoxic effects of Catha edulis--an exotic plant now available in the United Kingdom.