Data Availability
The National Health Research Ethics Committee (NatHREC) has developed a guideline that before data are taken outside Tanzania, clearance is sought to NatHREC by completing a Data Transfer Agreement (DTA) which is signed by both parties, provider and recipient of data stating the reason for transfer and which data are being transferred even though they could be de-identified data. Data request should be sent to the head of the institution that conducted the research, in this case National Institute for medical research. The institution will initiate the DTA signing processes between the two parties before submitting it to the National Health Research Ethics Committee for approval. The contact details for the head of the institution, for requesting the data: Director General, National Institute for Medical Research, email: 