well-defined group
well-defined groups
well-defined poly
well-defined polymers
well-defined population

well-defined structure
well-designed studies
well-differentiated adenocarcinoma
well-differentiated HCC
well-differentiated hepatocellular carcinoma
well-differentiated liposarcoma

well-differentiated SCC
well-documented case
well-established measure
well-established method
well-established model
well-established risk factor

well-established role
well-established treatment
well-known