Jan Crary, supervising clinical social worker at Los Angeles County+USC Medical Center, leads a team of people who often have to play detective when patients can’t be identified. Tattoos, scars, dental records and pocketed scraps of paper can all be useful in this sort of search, she says.

Jan Crary, supervising clinical social worker at Los Angeles County USC Medical Center, leads a team of people who often have to play detective when patients can’t be identified. Tattoos, scars, dental records and pocketed scraps of paper can all be useful in this sort of search, she says