Decreases in pneumonias and infiltrates during and after as compared to prior stimulation times Left to right: 4 sets of columns: patient identification number, and numbers of clinical pneumonias, chest radiographs and months followup, before, during and after stimulation. CP: clinical pneumonias (before, B, during, D, and after, A, stimulation); INF:number of cumulative infiltrates; CXR: number of chest radiographs during observation time; F/U: follow up (months); rec: recurring; est: estimated (based on pneumonia counts); Patients #s 2,4 and 5 had home use of the stimulator. Clinical information: referring physican, patient, family and medical records.