I'm trying to get more informations but here from Europe is more complicated. I got this reference
LIFEWAVEŽ U.S. CORPORATE
1020 Prospect Street Suite 200
La Jolla, CA 92037
Tel: (858) 459-9876
Fax: (858) 459-9876
Customer Service: (866) 420-6288
but my spoken english is not so good! If someone else there in USA could try to get more informations too would be better.
Anyway I m going to write an e.mail to them and I will inform you about their answers when i get it.