About the Authors

Hanna Fernemark

Contributed equally to this work with: Hanna Fernemark, Christine Jaredsson

Affiliation Department of Medical and Health Sciences, Faculty of Health Science, Linköping University, Linköping, Sweden

Christine Jaredsson

Contributed equally to this work with: Hanna Fernemark, Christine Jaredsson

Affiliation Department of Medical and Health Sciences, Faculty of Health Science, Linköping University, Linköping, Sweden

Bekim Bunjaku

Affiliation Department of Medical and Health Sciences, Faculty of Health Science, Linköping University, Linköping, Sweden

Ulf Rosenqvist

Affiliation Department of Internal Medicine, Motala Hospital, Motala, Sweden

Fredrik H. Nystrom

Affiliation Department of Medical and Health Sciences, Faculty of Health Science, Linköping University, Linköping, Sweden

Hans Guldbrand

hans.guldbrand@lio.se

Affiliation Department of Medical and Health Sciences, Faculty of Health Science, Linköping University, Linköping, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: FHN HG HF CJ. Wrote the paper: HF CJ FHN HG. Developed and organized the overall research plan: FHN. Developed the original study idea: HG. Participated in the design of the study details: HG BB UR. Obtained data: HG HF CJ. Conducted the study hands-on, recruited patients: BB UR HF CJ. Performed analyses of hormones: HF CJ. Read and approved the final manuscript: FHN HG BB UR HF CJ.