ASIH Stockholm Södra, Långbro Park, Palliative Home Care and Hospice Ward, Älvsjö, Sweden. Department of Laboratory Medicine, Division of Clinical Microbiology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden. Department of Surgery, Breast Centre, Capio St Görans Hospital, Stockholm, Sweden. Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden. Stockholms Sjukhem, Palliative Home Care and Hospice Wards, Stockholm, Sweden. Unit of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.