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  • Oral vitamin B12 versus intramuscular vitamin B12 for vitamin B12 deficiency
    Cochrane Systematic Reviews, 15-Mar-2018
  • Oral water soluble contrast for malignant bowel obstruction
    Cochrane Systematic Reviews, 7-Mar-2018
  • Oral water soluble contrast for the management of adhesive small bowel obstruction
    Cochrane Systematic Reviews, 4-Aug-2008
  • Oral xanthines as maintenance treatment for asthma in children
    Cochrane Systematic Reviews, 25-Jan-2006
  • Oral zinc for arterial and venous leg ulcers
    Cochrane Systematic Reviews, 9-Sep-2014
  • Oral zinc for the prevention of hyperbilirubinaemia in neonates
    Cochrane Systematic Reviews, 7-Jul-2015
  • Oral zinc for treating diarrhoea in children
    Cochrane Systematic Reviews, 20-Dec-2016
  • Orbital radiotherapy for adult thyroid eye disease
    Cochrane Systematic Reviews, 25-May-2012
  • Organisation of health services for preventing and treating pressure ulcers
    Cochrane Systematic Reviews, 9-Dec-2018
  • Organisational interventions for improving wellbeing and reducing work-related stress in teachers
    Cochrane Systematic Reviews, 7-Apr-2015
  • Organisational interventions for preventing and minimising aggression directed towards healthcare workers by patients and patient advocates
    Cochrane Systematic Reviews, 29-Apr-2020
  • Organisational travel plans for improving health
    Cochrane Systematic Reviews, 17-Mar-2010
  • Organised inpatient (stroke unit) care for stroke: network meta‐analysis
    Cochrane Systematic Reviews, 23-Apr-2020
  • Organising healthcare services for persons with an intellectual disability
    Cochrane Systematic Reviews, 11-Apr-2016
  • Orientation and mobility training for adults with low vision
    Cochrane Systematic Reviews, 12-May-2010
  • Oropharyngeal colostrum in preventing mortality and morbidity in preterm infants
    Cochrane Systematic Reviews, 7-Sep-2018
  • Orotracheal intubation in infants performed with a stylet versus without a stylet
    Cochrane Systematic Reviews, 22-Jun-2017
  • Orthodontic and orthopaedic treatment for anterior open bite in children
    Cochrane Systematic Reviews, 23-Sep-2014
  • Orthodontic treatment for crowded teeth in children
    Cochrane Systematic Reviews, 31-Dec-2021
  • Orthodontic treatment for deep bite and retroclined upper front teeth in children
    Cochrane Systematic Reviews, 1-Feb-2018
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