Perhaps you should try some spelling variations:
"Valid analytical measurement" » "Valid analysis measurement", "Valid optical measurement", "Valid analysis measurements"
"Valid clinical measurement" » "Valid clinical management", "Valid optical measurement", "Valid mechanical measurements"
valid analytical » based analytical, d analytical, valued analytic
valid clinical » acid clinical, aid clinical, rapid clinical
"valid inertial measurement" » "valid inferential measurement", "based inertial measurement", "all inertial measurement"

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