Responding to mass psychogenic illness.

Reference: 
Wessely S. | 2000
In: The New England journal of medicine, ISSN 0028-4793 | 342 | 2 | Jan 13 | 129-130
http://www.nejm.org/doi/pdf/10.1056/NEJM200001133420212
Placement code: 
Yzermans collectie