How can scientists work out what caused a disease/illness? For example, i had a scoliosis correction in 2011, how could

How can scientists work out what caused a disease/illness? For example, i had a scoliosis correction in 2011, how could scientists investigate what caused that? (Not necessarily scoliosis! That was just an example!! 😉 )

Posted on June 20, 2013 by in Question. Comments Off on How can scientists work out what caused a disease/illness? For example, i had a scoliosis correction in 2011, how could