Add support for follow-up blood samples to the blood registration wizard
Most patients will have follow-up blood samples taken 6, 12 and 36 months after operation. The blood registration wizard should be able to register them. The
BloodSample annotation should be extended with options for the three time-points (it currently allow
PreOp). If possible, it would be nice if the wizard could determine the most likely value based on information already registered.
Another difficulty is that the ID numbers on the referrals doesn't follow the regular 7-digit pattern used for the pathology or initial blood sample referral forms. This might also work to our advantage if we can use this to determine what kind of blood sample it is.