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. Author manuscript; available in PMC: 2019 Jun 1.
Published in final edited form as: Clin Trials. 2018 Mar 25;15(3):286–293. doi: 10.1177/1740774518762435

Figure 1.

Figure 1

Schematic diagram illustrating the allowed patient treatment sequences. CO2 indicates an assigned treatment block of CO2 laser, in conjunction with non-surgical medical therapy, PDL of pulsed-dye laser, in conjunction with non-surgical medical therapy, and MED of solely non-surgical medical therapy with no laser treatment.