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May 1989

Explanatory Note

Arch Ophthalmol. 1989;107(5):633. doi:10.1001/archopht.1989.01070010651003

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—In the March 1989 issue of the Archives, the reply by Palmer and colleagues (for the Cryotherapy for Retinopathy of Prematurity Cooperative Group) (Arch Ophthalmol. 1989;107:315-316) to a letter to the editor by Keith and coworkers was written in response to an earlier version of the letter. It is for this reason that some statements quoted by Palmer et al did not match statements in the final version of the letter by Keith et al.

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