['acute-graft-versus-host disease']
['cannabidiol', 'methylprednisolone', 'calcineurin inhibitor']

        Inclusion Criteria:

          1. Patients 18 years or older

          2. After allogeneic transplantation

          3. Grade III or IV acute GVHD

          4. No psychiatric contra-indication

          5. Informed consent

        Exclusion Criteria:

          1. History of psychosis

          2. Asthma

          3. Known allergy to cannabis constituents
      