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: A retrospective study was undertaken to determine whether the Denver Developmental Screening Test (DDST) language sector is a sensitive screen of speech and language development. Seventy-one children between 18 and 66 months of age with suspected developmental problems were referred to screening clinics conducted by a child evaluation team. Each child was screened using the DDST (revised) and another screening measure of speech and language development. Statistically significant differences were found between the DDST language sector and the speech-language screening in identification of expressive language and articulation problems. No significant difference was found with receptive language. The DDST failed to identify more than one half of the children with expressive language and/or articulation problems. These results demonstrate that the DDST may fail to identify children with speech and language impairment. Professionals involved in developmental screening need to be advised of alternative speech and language screening measures.

Ex Output:
Child

Ex Input:
Abstract: The four methods of illumination in the use of slit-lamp biomicroscopy of the anterior segment, described first by Vogt, are equally useful in the posterior part of the eye. Examination of the ocular fundus is more difficult. In particular, photography of the central and peripheral parts of the fundus demands additional technical arrangements if all the appearances of biomicroscopy are to be recorded.

Ex Output:
Fundus Oculi

Ex Input:
Abstract: The ICU records of 31 patients with the acquired immunodeficiency syndrome were reviewed. Of 23 (74%) patients admitted for respiratory failure requiring intubation and mechanical ventilation, 20 (87%) patients had Pneumocystis carinii and/or cytomegalovirus pneumonia. Of the eight patients admitted without respiratory failure, five (63%) were monitored after brain biopsy. Respiratory failure patients remained in the ICU for 10 +/- 1 days, compared to 5 +/- 1 days for those without respiratory failure (p less than .05). Overall mortality was 24 patients (77%); 21 (91%) of 23 respiratory failure patients died, compared to three (38%) of the eight without respiratory failure (p less than .01). All seven ICU survivors lived to hospital discharge.

Ex Output:
Acquired Immunodeficiency Syndrome