json_schema: {
      "$schema": "http://json-schema.org/draft-04/schema#",
      "title": "BBMRI Metadata",
      "description": "This is the blueprint of the metadata block specific for the BBMRI community",
      "type": "object",
      "properties": {
          "study_id": {
              "title": "Study ID",
              "description": "The unique ID or acronym for the study",
              "type": "string"
          },
          "study_name": {
              "title": "Study name",
              "description": "The name of the study in English",
              "type": "string"
          },
          "study_description": {
              "title": "Study Description",
              "description": "A description of the study aim",
              "type": "string"
          },
          "principal_investigator": {
              "title": "Principal Investigator",
              "description": "The name of the person responsible for the study or the principal investigator",
              "type": "string"
          },
          "study_design": {
              "title": "Study design",
              "description": "The type of study. Can be one or several of the following values.",
              "type": "array",
              "items": {
                  "type": "string",
                  "enum": [
                      "Case-control",
                      "Cohort",
                      "Cross-sectional",
                      "Longitudinal",
                      "Twin-study",
                      "Quality control",
                      "Population-based",
                      "Other"
                  ]
              }
          },
          "disease": {
              "title": "Disease",
              "description": "The disease of main interest in the sample collection, if any. Can be several values MIABIS-21",
              "type": "string"
          },
          "categories_of_data_collected": {
              "title": "Categories of data collected",
              "description": "The type of data collected in the study, and if biological samples are part of the study. Can be one or several of the following values: Biological samples, Register data, Survey data, Physiological measurements, Imaging data, Medical records, Other",
              "type": "array",
              "items": {
                  "type": "string",
                  "enum": [
                      "Biological samples",
                      "Register data",
                      "Survey data",
                      "Physiological measurements",
                      "Imaging data",
                      "Medical records",
                      "Other"
                  ]
              }
          },
          "planned_sampled_individuals": {
              "title": "Planned sampled individuals",
              "description": "Number of individuals with biological samples planned for the study",
              "type": "integer"
          },
          "planned_total_individuals": {
              "title": "Planned total individuals",
              "description": "Total number of individuals planned for the study with or without biological samples",
              "type": "integer"
          },
          "sex": {
              "title": "Sex",
              "description": "The sex of the study participants.",
              "type": "array",
              "items": {
                  "type": "string",
                  "enum": [
                      "Female",
                      "Male",
                      "Other"
                  ]
              }
          },
          "age_interval": {
              "title": "Age interval",
              "description": "Age interval of youngest to oldest study participant, for example 40-80",
              "type": "string"
          },
          "material_type": {
              "title": "Material type",
              "description": "The nature of the biological samples that are included in the study, if any. Can be one or several of the following values: Whole blood, Plasma, Serum, Urine, Saliva, CSF, DNA, RNA, Tissue, Faeces, Other",
              "type": "array",
              "items": {
                  "type": "string",
                  "enum": [
                      "Whole blood",
                      "Plasma",
                      "Serum",
                      "Urine",
                      "Saliva",
                      "CSF",
                      "DNA",
                      "RNA",
                      "Tissue",
                      "Faeces",
                      "Other"
                  ]
              }
          }
      },
      "additionalProperties": false
  }