liz szabo is a health reporter for "usa today" and is the main author of the series. szabo, welcome to the program. >> thank you. >> woodruff: the sheer magnitude of this problem is staggering, isn't it? >> yeah, it's really something that touches everyone, and we wanted to call the series "the cost of not caring" to show how we all pay the cost both in dollars and in human suffering. >> woodruff: what drew your attention to it in particular? you cover health regularly, but what about mental health in particular? >> i think the story grew out of some of the mass tragedies we've suffered in the past few years, but we also wanted to go beyond those shootings. i learned a lot about the healthcare system and what's going wrong, that we really wanted to look at the tragedies that happen every day, privately in people's homes and the losses that people are suffering from mental illness that don't make headlines. >> woodruff: how did you find out how widespread this is? >> we made a lot of phone calls and heard from many families who are trying to get help and just not manag