This allows for requests to
(with optional path-prefix "/api"):

* POST /{usecase}
* POST /{usecase}/etl/patient-record => as DNPM:DIP

* DELETE /{usecase}/{ID}
* DELETE /{usecase}/etl/patient-record/{ID}
* DELETE /{usecase}/etl/patient/{ID} => as DNPM:DIP

Where {usecase} is one of:

* mtbfile
* mtb => as DNPM:DIP

This might occur if a null value is present in the list of MSI findings.

With this change, the usage if "it" has been replaced with proper element names.

This keeps old behavior in future releases.