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. 2022 Oct 15;165(1):71–81. doi: 10.1007/s00701-022-05360-1

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Fig. 3 — Examples of skin measurements for cases #12, #13 and #14, during operation (pink solid line), post-operatively within 24 h (dashed blue line) and 24 h after ALA administration (solid green line). The exact measurement time is stated in the graphs with reference to the time of ALA administration