You need to sign in as a premium subscriber of Pharma China web edition, gold package or platinum package to view this article. Please visit ¡°Subscription/Order/Info¡± on the top menu of www.pharmachinaonline.com for information on Pharma China¡¯s premium products and services. Basic members can view only articles designated as ¡°free¡± and China Pharma Providers Directory. Please visit ¡°New Member Registration¡± on the home page of www.pharmachinaonline.com (left on top menu bar) to register as a basic member. Please contact info@pharmachinaonline.com for more information and assistance. Click Here