>> reporter: it is called the followers of christ. among its principle tenets, faith healing. no doctors. former member holly martinez never saw one growing up. >> when you go to the doctor, you are having a weakness in faith that you don't believe that god will heal you of whatever it is. >> reporter: dr. larry loomen is the former chief medical examiner in this county. he thought the church would have learned its lesson long ago. over the last three decades his office investigates the deaths of some 20 children of church members. most, loomen says, could have been saved with medical treatment. >> it's against the law not to feed your kid, it's against the law not to provide the necessities of life, including medical care for a child. >> reporter: imagine not allowing your own children to go see a doctor. to fully understand the impact of that, authorities say just come here to the church's cemetery where you'll find the names of numerous children whose deaths doctors say could easily