text: import petl as etl
  from fhir_petl.util import resolve
  
  observations = (etl.io.csv.fromcsv(resolve('work/Observation.csv')))
  patients = (etl.io.csv.fromcsv(resolve('work/Patient.csv')))
  procedures = (etl.io.csv.fromcsv(resolve('work/Procedure.csv')))
  conditions = (etl.io.csv.fromcsv(resolve('work/Condition.csv')))
  requests = (etl.io.csv.fromcsv(resolve('work/MedicationRequest.csv')))
  dispenses = (etl.io.csv.fromcsv(resolve('work/MedicationDispense.csv')))
  
  print(requests.look(10))
  