The Huchard syndrome was then studied more deeply by Miller and Texidor, medical practitioners at the Cardiovascular Department and the Department of Medicine at the Michael Reese Hospital in Chicago, in 1955.[8] They reported the condition in 10 patients, one being Miller himself. In 1978, PCS was discussed by Sparrow and Bird who reported that 45 healthy patients suffered from it and that it was probably more frequent than generally assumed.[9] PCS in American children has been discussed by Pickering in 1981[10] and by Reynolds in 1989.[11] These constitute the literature available in English on PCS.