Montreal Protocol global environmental protection". Montreal Protocol The Montreal Protocol on Substances that Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 26 August 1987, and entered into force on 26 August 1989, followed by a first meeting in Helsinki, May 1989. Since then, it has undergone eight revisions, in 1990 (London), 1991 (Nairobi), 1992 (Copenhagen), 1993 (Bangkok), 1995 (Vienna), 1997 (Montreal), 1998 (Australia), 1999 (Beijing)
Wiley protocol at separate times throughout the period. The protocol is promoted as differing from conventional hormone replacement therapy in several ways: The protocol also includes a follow-up program to monitor the serum of the bioidentical hormones. Wiley has stated that in her opinion, the most important aspect of the protocol is the specific schedule and levels of the hormone doses rather than their bioidentical nature. A patent was granted for the protocol in 2011 for the specific blend of hormones and dosing method. Concerns have been raised that serum levels may not be an acceptable marker for transdermally administered hormones, that