Correction: A forty-year review of Rocky Mountain spotted fever cases in California shows clinical and epidemiologic changes

• Anne M. Kjemtrup, 
• Kerry Padgett, 
• Christopher D. Paddock, 
• Sharon Messenger, 
• Jill K. Hacker, 
• Tina Feiszli, 
• Michael Melgar, 
• Marco E. Metzger, 
• Renjie Hu, 
• Vicki L. Kramer