"UA NEEB" to me is a shaman ways to find out what caused that person to get sick and how to cure him/her. Now days, we live in an era where there are many illness and diseases that can not be cure by a shaman's ritual such as; AIDS, cancer, hypetitus, Tuberculosis and many others. These kind of illness can not be cure unless one seek help from doctors and take the right medications for it. Even with the right medication, it can only slow down the illness and not completely cure it.
But what I don't get it is that many families still practice shamanism's ritual to cure these kind of illness. And it can be costly too.
Yes, you are right, such serious illness as you'd mention can't be cure by a soul calling ceremony.
However, people's health starts to degrade as their mental and eventually, spiritual health suffer. I like to look at the soul-calling ceremony as a matter of faith, if you believe in it, than you believe you're cure and you simply become happier.
I also notice that a lot of people that order these ceremony are often depressed and seeking attention.