主题：新冠溯源：这文章为啥没人理会，是假的吗？ -- 胡一刀

The problem, researchers say, is that none of them know who or where she is.

Milan’s Policlinico hospital and the University of Milan, which oversaw her case, said they don’t have her details. Raffaele Gianotti, the dermatologist who treated her, died in March, days before the WHO-led team asked for more research into his patient. Covid-19 didn’t cause his death, said his wife, Roberta Massobrio.

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Three days earlier, Dr. Gianotti had died suddenly at 61 years old. The researchers who co-wrote his paper including Dr. Barberis said they don’t know the name, contact details or residence of the woman who yielded the skin sample.

The University of Milan has no record of the patient, said a spokeswoman and other officials there. A spokeswoman for Policlinico hospital said it didn’t have a file on the woman.