Some of the clinical findings described in their first papers do not match current criteria for Creutzfeldt–Jakob disease, and it has been speculated that at least two of the people in initial studies were suffering from a different ailment.
Beberapa temuan klinis yang dijelaskan di kertas kerja pertama mereka tak seimbang dengan kriteria terkini untuk penyakit Creutzfeldt-Jakob, dan dianggap paling mungkin setidaknya 2 pasien di studi awal menderita akibat gangguan yang berbeda.