Confidentiality {27}
All data will be coded and securely stored for 25 years. A sequential identification number will be allocated to each participant registered in the study. This number will identify the participant and must identify samples. To avoid identification errors, the participant’s code (a maximum of 4 alphanumeric characters) and date of birth will be recorded. The responsible investigators will ensure that this study is conducted in agreement with either the Declaration of Helsinki (available on the World Medical Association website (