About the Authors

Jenny Persson

Affiliation Division of Medical Microbiology, Department of Laboratory Medicine, Lund University, Lund, Sweden

Bernard Beall

Affiliation Centers for Disease Control and Prevention, Respiratory Diseases Branch, Atlanta, Georgia, United States of America

Sara Linse

Affiliation Department of Biophysical Chemistry, Chemical Center, Lund University, Lund, Sweden

Gunnar Lindahl

To whom correspondence should be addressed. E-mail: gunnar.lindahl@med.lu.se

Affiliation Division of Medical Microbiology, Department of Laboratory Medicine, Lund University, Lund, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

JP and GL conceived and designed the experiments. JP performed the experiments with help from SL. BB supplied essential material. JP, SL, and GL analyzed the data. JP and GL wrote the paper.