Received: 23 November 2020
Accepted: 14 April 2021
First Online: 28 April 2021
: This study was conducted in agreement with the Ethics Committee of West China Hospital of Sichuan University. All participants had provided a written informed consent. The patient in Fig. InternalRef removed agreed that her photos would be published in BMC neurology. All the methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no competing interests.