The Research Ethics Committee, Faculty of Health Sciences, University of Cape Town, South Africa, approved the case-control study.
The institutional review boards (IRBs) of the University of North Carolina Chapel Hill, Cincinnati Children's Hospital and Medical Center, the University of Washington, and the CDC approved this case study.
The case study research protocol was approved by the respective Research Ethics Boards at the University of Toronto, and the University of Manitoba, Canada; and the University of Nairobi, Kenya.
All the scientific-ethical committees of Denmark approved the study (case file 20010202).
Ethical committee of the department of pharmacy approved the study protocols (Case approval # E- AM-01-2009) as per "Bye Laws 2008 of the University of Malakand (Scientific procedures Issue- I)".
The cases study was approved by the ethics committee Zvezdara University Medical Center according to the principles of good clinical practice and with the ethical principles of the Declaration of Helsinki.
The ethical committee of Akureyri Hospital (case 2/2012) approved the study and the use of personal data from the study was notified to the Data Protection Authority (S5594/2012).
The Ethics Committee of the Faculty of Medicine of the University of Chile (case ID: 085-2008) approved the study and the analysis of both formalin-fixed paraffin embedded samples and interview data.
In this case, the management board of Lutheran Medical Services, Onandjokwe Hospital, approved the study.
