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: The serum testosterone level (STL) was determined in 84 male and 32 female patients with gastric carcinoma and in 58 male and 20 female patients with benign diseases as a control group. The STL of the male patients with carcinoma was lower (446 +/- 149 ng/dl) than that of the male control group (532 +/- 132 ng/dl) (P less than 0.001). Even 17 male patients of the early carcinoma showed lower STL (440 +/- 117 ng/dl) than the normal group (P less than 0.001). In the female patients, it was also lower (31.6 +/- 16.0 ng/dl) than in the control group (46.3 +/- 15.3 ng/dl) (P less than 0.005). The postoperative STL of the cases surviving the gastrectomy was higher than the preoperative data in 32 male patients (P less than 0.005) as well as in 12 female patients (0.025 greater than P greater than 0.01), whereas it obviously decreased in the patients who died of recurrence. Therefore, it appears that gastric carcinoma decreases the STL by some mechanism.
Which is the apt title for the abstract? option1: Serum testosterone level of patients with gastric carcinoma before and after gastrectomy. option2: Wheelchair use by ambulatory nursing home residents.
[EX A]: Serum testosterone level of patients with gastric carcinoma before and after gastrectomy.

[EX Q]: Abstract: A 16-year-old male presented with a hemopneumothorax following a gunshot wound to the left chest. He was treated effectively with closed suction drainage for 48 hours when he suddenly complained of severe left chest pain. Preoperative diagnosis was suggestive of a traumatic diaphragmatic hernia but operative findings were confirmatory of a rare hernia through the foramen of Bochdalek. Chest X-ray showing a gas-filled viscus above the diaphragm is diagnostic. Increased abdominal pressure generated when he was first hit by the bullet and aggravated by increased negative intrapleural pressure resulting from suction drainage of the hemothorax is the probable mechanism of the herniation.
Which is the apt title for the abstract? option1: Gunshot wound of the left chest and Bochdalek hernia. option2: Spinal deformity.
[EX A]: Gunshot wound of the left chest and Bochdalek hernia.

[EX Q]: Abstract: CT of compression fractures is a useful adjunct to the plain x-ray in excluding signs of metastasis. However, increased bone density on CT may not distinguish osteoporotic fractures from neoplastic disease, in which case radioiodine scan, bone and marrow biopsies, or myelography may be necessary. Surgery for painful osteoarthritic spinal disease is controversial. The potential advantages of surgery must be weighted against the risk of anesthesia, the length and tolerance of postoperative immobility, and the effect of laminectomy and fusion on the biomechanics of the spine. Furthermore, the elderly are at increased risk for postoperative complications.
Which is the apt title for the abstract? option1: Back pain in the elderly: updated diagnosis and management. option2: A child with HIV infection [letter]
[EX A]:
Back pain in the elderly: updated diagnosis and management.