passive voice?

0

Hello I need help with the sentence below, rewording so it is not in passive voice

See example:

According to Cobb et al. (2010) the lasers most commonly used for periodontal treatment are diode lasers, Nd:YAG, Er:YAG, Er, Cr:YSGG, CO², and photodynamic therapy protocols.
asked Feb 09 '14 at 22:59 deannashannon New member

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