Uwajima Tokushukai Hospital, at the center of a recent organ purchase scandal, admitted Saturday it conducted kidney transplants without the formal consent of donors.
The hospital in Ehime Prefecture, which earlier admitted using kidneys feared to have been affected by donors' diseases in 11 transplant operations, said it conducted eight transplants without the written consent of the donors.
"We did not take written agreements. But we sufficiently explained to donors and their families," Makoto Mannami, in charge of kidney transplants at the hospital, said at a news conference.