Photo-onycholysis and Psoralen Use

To the Editor.—  Referring to the letter "Photo-Onycholysis Secondary to Psoralen Use" in the March 1978 Archives (114:448), we would like to inform Dr Rau and associates that our detailed article on this subject was published in May 1977.¹As a matter of interest, most European dermatology journals preferentially print articles that are submitted in English, since expansive perusal is anticipated.