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The tissue clearance depth TCD is the distance between the end of the extension portion and a point along an extension of the axis of the straight spacer portion which is defined by a line that is normal to the axis and that intersects the distal tip of the needle. The tissue clearance ...
Selected hospitals received a formal letter from the AHRI and DMIP, and each hospital’s medical directors gave their consent. Written consent/assent was taken from each study participant before initiation of the actual data collection. Patient information was kept confidential by sharing the ...