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  1. 1981
    “…Subjects aged 60–69 are being invited to complete three guaiac faecal occult blood tests (6 windows) every 2 years. The programme aims to reduce mortality from colorectal cancer by 16% in those invited for screening. …”
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    Outcomes of the Bowel Cancer Screening Programme (BCSP) in England after the first 1 million tests
  2. 1982
    “…RESULTS: Baseline prevalence of active HBV infection (HBsAg positive), past or occult HBV infection (anti-HBc positive and HBsAg negative) and anti-HCV was 5.2%, 42.9%, and 5.7%, respectively. …”
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    High Seroprevalence of HBV and HCV Infection in HIV-Infected Adults in Kigali, Rwanda
  3. 1983
    “…Limited data on the reactivity of steroidogenic P450s toward olefinic substrates exist, and the study of occult activities toward alternative substrates is a fundamental aspect of the growing field of combinatorial biosynthesis. …”
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    Epoxidation Activities of Human Cytochromes P450c17 and P450c21
  4. 1984
    “…RESULTS: Of 351 patients, 76 patients (group 1) had a strong positive result for salivary occult blood test and 275 patients (group 2) had weak positive or negative test results. …”
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    Association of Periodontal Diseases and Liver Fibrosis in Patients With HCV and/or HBV infection
  5. 1985
    “…BACKGROUND: Timely follow-up of fecal occult blood screening with colonoscopy is essential for achieving colorectal cancer mortality reduction. …”
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    Mailed participant reminders are associated with improved colonoscopy uptake after a positive FOBT result in Ontario’s ColonCancerCheck program
  6. 1986
    “…Some studies also hinted the serofast was associated with subtypes i of treponema pallidum(TP) repeat gene (RR (i vs d)=4.67,95%CI: 1.31–;16.69) and TP occult infection. CONCLUSION: The age, gender, stage of infection, baseline titers, treatment drug, cellular immune suppression and disorders, TP occult infection and subtypes i of TP repeat gene should be considered as important predictors of serofast. …”
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    Potential Predictors for Serofast State after Treatment among HIV-Negative Persons with Syphilis in China: A Systematic Review and Meta-Analysis
  7. 1987
    “…CONCLUSIONS: The majority of PDAC patients with RD-LA had occult distant organ metastasis. Clinical features and survival curves were different depending on the site of occult distant organ metastasis. …”
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    A clinical role of staging laparoscopy in patients with radiographically defined locally advanced pancreatic ductal adenocarcinoma
  8. 1988
    “…Systematic EBUS-TBNA has the potential to contribute significantly to radiotherapy planning and delivery, by either identifying occult nodal metastases, or demonstrating FDG-avid LNs to be disease-free.…”
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    Systematic Endobronchial Ultrasound-guided Mediastinal Staging Versus Positron Emission Tomography for Comprehensive Mediastinal Staging in NSCLC Before Radical Radiotherapy of Non-small Cell Lung Cancer: A Pilot Study
  9. 1989
    “…Of the known etiologies, internal malignancies, either known or occult, are well described. Even though malignancies are known to present with internal jugular vein thrombosis, it rarely occurs due to prostate carcinoma. …”
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    Internal jugular venous thrombosis due to Trousseau’s syndrome as the presenting feature of metastatic prostate carcinoma: a case report
  10. 1990
    “…At the European Institute of Oncology in Milan, Italy, Prof Umberto Veronesi introduced a new technique called the radioguided occult lesion localisation (ROLL) in 1996 to replace conventional methods and their disadvantages (Zurrida S, Galimberti V, and Monti S et al (1998) Radioguided localization of occult breast lesions Breast 7 11–13 https://doi.org/10.1016/S0960-9776(98)90044-3). …”
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    Radioguided localisation of non-palpable lesions of the breast in Costa Rica: review of results of our first 800 patients in private practice
  11. 1991
    “…A beta binomial distribution was used to estimate the probability of an occult nodal disease is truly node-negative as a function of total number of LNs examined and T stage. …”
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    Assessing the adequacy of lymph node yield for different tumor stages of colon cancer by nodal staging scores
  12. 1992
    “…Forty-nine patients had obscure and overt gastrointestinal bleeding (GIB) and 22 % had occult GIB with iron deficiency. The cohort’s rate of positive diagnostic yield was 73 % and 35 % for therapeutic yield. …”
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    Predictors for outcomes and readmission rates following double balloon enteroscopy: a tertiary care experience
  13. 1993
    “…Initial workup revealed evidence of iron deficiency anemia, and stool occult blood test was positive. She was scheduled for a colonoscopy to assess the source of occult gastrointestinal bleeding. …”
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    Diphyllobothrium latum Mimicking Subacute Appendicitis
  14. 1994
    “…TT of 4 mm and above was predictor of occult cervical nodal metastasis.…”
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    Preoperative ultrasonography for tumor thickness evaluation in guiding management in patients with early oral tongue squamous cell carcinoma
  15. 1995
    “…There were no cases of occult leiomyosarcoma and all specimens were successfully manually morcellated within a bag. …”
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    Safety and feasibility of contained uterine morcellation in women undergoing laparoscopic hysterectomy
  16. 1996
    “…However, false-positive results may occur in the left common iliac vein of elderly patients. Finally, occult PAD rarely occurs in patients with suspected lower extremity venous disease. …”
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    Evaluation of venous pathology of the lower extremities with triggered angiography non-contrast-enhanced magnetic resonance imaging
  17. 1997
    “…The overall DY was 31.6% (344 of 1087 patients; 95% CI, 29.0%-35.0%), higher for an indication of small bowel bleeding that was overt or occult with heme-positive stool vs occult with only iron-deficiency anemia (DY, 35.0% [170 of 486] and 35.3% [66 of 187] vs 26.1% [108 of 414]; P=.004 and P=.02, respectively). …”
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    Multiphase Computed Tomographic Enterography: Diagnostic Yield and Efficacy in Patients With Suspected Small Bowel Bleeding
  18. 1998
    “…Haemoglobin concentration < 9.9 g/dL, body temperature > 38.7 °C and occult blood influenced the detection of malaria antigens in both urine and saliva. …”
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    Evaluating the potential of using urine and saliva specimens for malaria diagnosis in suspected patients in Ghana
  19. 1999
    “…SIMPLE SUMMARY: In early-stage (cT1-2N0) oral cancer, occult lymph node metastases are present in 20–30% of patients. …”
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    New Developments in Imaging for Sentinel Lymph Node Biopsy in Early-Stage Oral Cavity Squamous Cell Carcinoma
  20. 2000
    “…Non-PCV13 serotypes were associated with meningitis and occult bacteraemia and PCV13 serotypes with pneumonia. …”
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    Pneumococcal serotypes in children, clinical presentation and antimicrobial susceptibility in the PCV13 era
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