The surrogate mother tells ABC News: "I love him, he's like my child now"
A Thai woman who carried a baby with Down's Syndrome as a surrogate mother has vowed to take care of the boy after his natural parents gave him up.
The Australian couple left Gammy, now six months old, with Pattaramon Chanbua but took his healthy twin sister.
"Why does he have to go through all the hardships? I love him... He's like my child now," Ms Pattaramon said.
Gammy has a congenital heart condition, a lung infection and Down's and is in a Thai hospital for urgent treatment.
It has raised more than A$150,000 ($140,000; £83,000) from 3,400 donors in 11 days.
In Australia, Prime Minister Tony Abbott expressed his sadness: "I guess it illustrates some of the pitfalls involved in this particular business.
"It's a very, very, sad story and I hate to think that, you know, a child could be abandoned like that."
Abortion refused
Ms Pattaramon was paid $15,000 (£9,000) to be a surrogate for the couple, whose identities remain unknown.
She was told of the child's condition four months after becoming pregnant, prompting the couple to ask her to have an abortion.