private Uri InterviewQualityApi(string surveyId, string interviewId)
{
var uriText = new StringBuilder(ConnectionClient.NfieldServerUri.AbsoluteUri);
uriText.AppendFormat("Surveys/{0}/InterviewQuality", surveyId);
if (!string.IsNullOrEmpty(interviewId))
uriText.AppendFormat("/{0}", interviewId);
return new Uri(uriText.ToString());
}