Erratum to: Listen protect connect for traumatized schoolchildren: a pilot study of psychological first aid

Author details Department of Occupational and Environmental Health, University of Iowa, 105 S. River St. #318, Iowa City, IA 52242, USA. Injury Prevention Research Center, University of Iowa, Iowa City, IA, USA. Cedar Rapids Community School District, Cedar Rapids, IA, USA. School of Social Work, University of Southern California, Los Angeles, CA, USA. Department of Biostatistics, University of Iowa, Iowa City, IA, USA.