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).

[EX Q]: Abstract: Surgical experience with grafts of human dura mater sterilized by gamma rays and preserved in alcohol is reported in 804 cases. The method of graft preparation is a simple, cheap, and practical technique for making available a plentiful quantity of large and small pieces of dura to use for plastic reconstruction in everyday neurosurgical practice. Annual inspection for sterility and immunogenicity over an 18-year period indicates that this system of preservation is valid for an unlimited period of time.
Which is the apt title for the abstract? option1: Neurosurgical use of human dura mater sterilized by gamma rays and stored in alcohol: long-term results. option2: Parenteral estrogens for pregnancy prophylaxis [letter]
[EX A]: Neurosurgical use of human dura mater sterilized by gamma rays and stored in alcohol: long-term results.

[EX Q]: Abstract: Allergy to potato is uncommon, and even more uncommon is allergy to potato pollen. The occurrence of both phenomena in the same patient made it possible to study cross-reactivity patterns of potato antigens. An 11-year-old girl, exclusively breast-fed for her first 4 months, developed anaphylactic symptoms after ingestion of potato at 5 months of age when she was fed potato for the first time. Subsequently, she developed urticaria, angioedema, and respiratory and systemic symptoms on contact with potatoes, ingestion of potatoes, and exposure to cooking potatoes or potato pollen. Three allergenic extracts from potato pulp, peel, and pollen were prepared. Polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate and isoelectrofocusing of the three extracts were performed. IgE-mediated allergy to these extracts was demonstrated by means of immediate skin test reactivity, positive passive transfer, RAST, RAST inhibition, and leukocyte histamine release. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the pulp extract followed by electroblotting and autoradiography demonstrated specific IgE antibodies directed against several proteins ranging from 14,000 to 40,000 daltons.
Which is the apt title for the abstract? option1: Allergy to white potato. option2: Occam and mankind's genetic bottleneck [letter]
[EX A]: Allergy to white potato.

[EX Q]: Abstract: This article stresses the fact that the pediatric patient who presents with back pain is very different from the adult patient with the same complaint. A child is much less likely to complain of symptoms when there is no organic cause for the complaint, and therefore his or her status should be evaluated carefully. When an immediate cause is not obvious, repeated examination should be performed because time may reveal a cause of the symptoms.
Which is the apt title for the abstract? option1: Evaluating the child with back pain. option2: Nutrition and cancer II.
[EX A]:
Evaluating the child with back pain.