code: function (cb) {
              fs.readFile(path.resolve(__dirname, "dose_form_groups.txt"), "UTF-8", function (err, doseForms) {
                  if (err) return cb(err);
                  // each group is a new line in the file
                  doseFormGroups = doseForms.toString().split("\n").filter(function (form) {
                      // ignore empty lines
                      return form.length > 0;
                  });
                  cb();
              });
          }
docs: read in doseFormGroups from text file