Conditions: Positive Expectations
Interventions: Other: Saline Nasal Spray; Other: Saline Nasal Spray
Sponsors: Universitätsklinikum Hamburg-Eppendorf
Not yet recruiting Conditions: Positive Expectations
Interventions: Other: Saline Nasal Spray; Other: Saline Nasal Spray
Sponsors: Universitätsklinikum Hamburg-Eppendorf
Not yet recruiting