Social & Preventive Medicine

Which of the following statements about Delphi Method is TRUE?

Method involves formation of a team to undeake and monitor a Delphi on a given subject

Selection of one or more panels to paicipate in the exercise. Customarily, the panelists are expes in the area to be investigated

The first round in the Delphi method involves development of a questionnaire

All the above are true