I know of Theravada practitioners who don't believe in rebirth other than as changes in the present lifetime as Element illustrated.
This might be helpful to you
"Anatta and Rebirth" by Buddhadasa Bhikkhu
URL
Thanks I'll give this a read some time. I was actually willing to believe in rebirth in the capacity of human to human, but It's nice to know that you can even not believe in it at all if you so choose.