| The possibly calming effect of having family present for the control group during the intervention could have played a part in the reaction. |
| The control group was maintained in a similar chamber ventilated with filtered air. |
| Patients in the control group received standard care delivered by the community mental health teams. |
| This study is a preliminary report of the case series without a control group for comparison. |
| Direct evaluation cannot be done because very few ganzfeld studies have included a control group. |
| Collection of the control group was essential for the evaluation of seropositivity among the general female population. |
