> a detailed account of neurological symptoms of 43 people The sample size is extremely small, and there is already selection bias because of pre-screening for

> a detailed account of neurological symptoms of 43 people The sample size is extremely small, and there is already selection bias because of pre-screening for neurological symptoms > who had either confirmed or suspected Covid-19 really, they couldn't test the 43 people for covid that they were doing a study on?