Laboratory Report as HL7 FHIR document

should be 

Laboratory Report as HL7 FHIR Document

i.e. theusing a HL7 FHIR document Bundle.

Should be:  i.e. using a HL7 FHIR document Bundle.

• preserve the existing document-based paradigm, enabling for the REST one
• help the transition from the CDA-based solutions, by facilitating the reuse of the existing exchange infrastructures and of the on-development mapping artifacts used for the CDA to FHIR transformation

Should be: 

• preserves the existing document-based paradigm, enabling for the REST one
• helps with the transition from the CDA-based solutions, by facilitating the reuse of the existing exchange infrastructures and of the in-development mapping artifacts used for the CDA to FHIR transformation