Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.

Input: Consider Input: Abstract: Foreign body aspiration in children is frequently associated with unilateral emphysema or atelectasis on chest x-ray. Two cases are reported of tracheal or bilateral foreign bodies in which the original chest x-rays were read as normal, but the history was suggestive of the foreign body aspiration. Early bronchoscopy can prevent the long-term morbidity that results from unrecognized tracheobronchial foreign bodies.

Output: Normal radiographic findings after foreign body aspiration. When the history counts.

Input: Consider Input: Abstract: A graphic representation of the micturition cycle by a pressure-volume plot has been obtained in 120 women, both incontinent patients and normal controls. The pattern of contraction during voiding allowed prediction of the outcome of treatment. Patients with urethral sphincter incompetence and a sustained detrusor contraction had a good result from colposuspension even if detrusor instability was found during filling. Where the urethral sphincter was competent, patients with urge incontinence with or without detrusor instability during filling cystometry had a good response to drugs, providing a sustained detrusor contraction was present during voiding. Urethral sphincter incompetence was characterised by a low detrusor voiding pressure.

Output: The pressure-volume plot and prediction of treatment outcome in female incontinence.

Input: Consider Input: Abstract: A retrospective study of patients patch tested between 1968 and 1970 was undertaken and case records of 200 patients with unequivocal positive patch tests were studied for age and sex distribution. There was an overall female preponderance (61%), with 2 peaks of incidence in the 10-20 and 40-50 year age groups in females, but only 1 peak of incidence in the 40-50 year age group in males. There was a steady decline in all sensitivities after the 6th decade of life in both sexes. Nickel sensitivity was more common in females (92%), whereas dichromate sensitivity predominated in males (64%). Of the 200 patients, only 5(2.5%) were atopics, all of whom were females.
Output: Age and sex incidence of allergic contact dermatitis.