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

Q: Abstract: The IgG and IgM specific antibodies against a panel of 23 anaerobic gut bacteria were examined in Crohn's disease, ulcerative colitis, and healthy controls. Four of the organisms, Bifidobacterium bifidum, Coprococcus comes (ME46), Coprococcus comes (Sp4), and Eubacterium limosum gave abnormal antibody titres in Crohn's disease compared with those of controls. In Crohn's disease specific IgG antibodies to three of the organisms were low and the IgM antibodies were higher than those of controls. IgM antibodies were also raised in ulcerative colitis. Antigenic cross reactivity could be shown between some of these organisms. The possible clinical importance of these abnormal antibody responses to specific organisms is unexplained.

A: Antibody response to anaerobic coccoid rods in Crohn's disease.
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Q: Abstract: Patient perception of uterine activity was assessed objectively in 44 women at risk for preterm labor using a tocodynamometer designed for ambulatory outpatient use. The monitor allowed patient-activated marking of the data whenever contractions were perceived. After instruction in self-detection of uterine activity, tocodynamometry was performed daily for 8.5 weeks per patient. Patients identified an average of 15% of their contractions during the study (range 0-78%). Numerous marks were placed in the absence of any detectable uterine activity. Of multiple obstetric variables analyzed, only multifetal gestation and preterm labor in the current pregnancy had any significant impact on perception. Results suggest that self-detection of uterine activity may not be reliable as the only means for the earliest possible detection of preterm labor.

A: Maternal perception of prelabor uterine activity.
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Q: Abstract: Clinical and morphologic features of 89 cases of childhood yolk sac tumor (YS) and embryonal carcinoma (EC) (29 associated with teratomas) submitted to the Rare Tumor Registry of the Southwest Oncology Group (1971-1979) or the Pediatric Oncology Group (1980-1984) between 1971 and 1984 were reviewed and submitted to statistical analysis. This review showed an improved survival for each 5-year period regardless of tumor site, no statistically significant difference between "pure" tumors and those mixed with other teratomatous components, no statistically significant difference between YS and EC in children, a better than reported prognosis for sacrococcygeal tumors occurring after the neonatal period, a particularly poor prognosis for neonatal "benign" sacrococcygeal teratomas resected without coccygectomy when they recur as YS, excellent survival for all testicular tumors regardless of age or the presence of EC, and the occurrence of mediastinal tumors in females.

A:
Nongerminomatous malignant germ cell tumors in children. A review of 89 cases from the Pediatric Oncology Group, 1971-1984.
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