a court may consider only the issue of whether the parent's consent was voluntary.
A child's father who denies paternity of the child under subdivision (3) or consents to the termination of the parent-child relationship under subdivision (4) may not challenge or contest the child's adoption or termination of the parent-child relationship.
IC 31-35-1-6
Pre-1997 Recodification Citation: 31-6-5-2(c) part.