Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.

Ex Input:
Abstract: In February 1985, the National Institutes of Health sponsored the Consensus Development Conference on the Health Implications of Obesity. The panel of experts concluded that height and weight tables based on mortality data and the body mass index (BMI) are helpful measures to determine the presence of obesity and the need for treatment. For the dietitian, however, practical concerns arise regarding which index to select. The usefulness of the BMI in patient education and contradictions between the 1959 and 1983 Metropolitan Life Insurance height-weight tables are discussed. A temporary solution is offered in light of the need for further investigation into morbidity experience at weights recommended in the 1983 table.

Ex Output:
Body Composition

Ex Input:
Abstract: Brain death is a condition widely recognized by philosophers, theologians, the public, and the law. Criteria for the determination of brain death have been progressively refined for almost 30 years. They involve clinical evidence of the loss of brain function and various periods of observation, which can often be shortened by confirmatory tests, particularly cerebral blood flow studies or electroencephalography. Prompt declaration of brain death is therefore possible. In addition, it is important for physicians to offer the possibility of organ donation to the patient's family both because organs are desperately needed and because many families desire this. A model algorithm for the determination of brain death, explanatory text, and appropriate references are presented to aid the development of protocols for individual and hospital use.

Ex Output:
Algorithms

Ex Input:
Abstract: We developed a highly sensitive and specific assay for hCG using monoclonal antibodies (Mabs) directed against a 37-amino acid synthetic polypeptide analogous to the carboxyl-terminus (CTP) of beta hCG. Five antibodies that varied by either their affinity for beta hCG or their specificity for epitopes on CTP were investigated. To measure hormone levels, we used as the radiolabeled indicator an alpha-subunit-reactive Mab. The monoclonal-immunoradiometric assay had a lower limit of sensitivity of 0.05 ng/ml. Serum levels of hCG or hCG-like material with CTP structure were measured in 229 healthy blood donors; 1.1% of healthy men and 4.6% of nonpregnant women younger than 50 yr had serum values varying between 0.05 and 0.23 ng/ml. Moreover, 6 to 7 healthy women older than 50 yr had detectable levels in the 0.05-0.20 ng/ml range. To study the disappearance rates in normal women, we followed serum hCG serum levels of 6 women who had previously received a single im injection of the hormone. These individuals failed to develop a pregnancy after in vitro fertilization; hCG declined from 0.5 to 0.05 ng/ml within 2 weeks. These results were in contrast to the findings in 12 patients with hCG-producing tumors. In 9 patients without any evidence of recurrent disease, hCG levels became undetectable within 5 months. However, 3 others had levels consistently above 0.05 but below 0.5 ng/ml. In 2 of these three patients, subsequent increasing hCG levels were associated with tumor recurrence. We conclude that this hCG assay based on both anti-peptide and anti-hCG Mabs may be useful in tumor monitoring.

Ex Output:
Adult