sentence: Nevertheless , a study by The New England Journal of Medicine claims that only diastolic blood pressure is affected by nitrate supplement , since they did not find in their study a significant change to systolic blood pressure after nitrate supplementation in healthy volunteers .
modified: Nevertheless , a study of The New England Journal of Medicine claims that only the diastolic blood pressure is affected by nitrate supplement , once it was not found in their study a significant change on systolic blood pressure after nitrate supplementation in healthy volunteers .
transformation: PREP, DET, PREP, PRON, VERB:TENSE, VERB:FORM, PREP