Araya and Ford ( 1981 ) explored changes in liver function .
Araya and Ford ( 1981 ) concluded there was no evidence of Hypericum - related effect on the excretory capacity of the liver , or any interference was minimal and temporary .
Araya and Ford ( 1981 ) explored changes in liver function and concluded there was no evidence of Hypericum - related effect on the excretory capacity of the liver , or any interference was minimal and temporary .