A ALIMENTARY TRACT AND METABOLISM

 B BLOOD AND BLOOD FORMING ORGANS

 C CARDIOVASCULAR SYSTEM

 D DERMATOLOGICALS

 G GENITO URINARY SYSTEM AND SEX HORMONES

 H SYSTEMIC HORMONAL PREPARATIONS, EXCL. SEX HORMONES AND INSULINS

 J ANTIINFECTIVES FOR SYSTEMIC USE

 L ANTINEOPLASTIC AND IMMUNOMODULATING AGENTS

   L01 ANTINEOPLASTIC AGENTS

   L02 ENDOCRINE THERAPY

     L02A HORMONES AND RELATED AGENTS

     L02B HORMONE ANTAGONISTS AND RELATED AGENTS

       L02BA Anti-estrogens

       L02BB Anti-androgens

       L02BG Aromatase inhibitors

         L02BG01 Aminoglutethimide

         L02BG02 Formestane

         L02BG03 Anastrozole

         L02BG04 Letrozole

         L02BG05 Vorozole

         L02BG06 Exemestane

       L02BX Other hormone antagonists and related agents

   L03 IMMUNOSTIMULANTS

   L04 IMMUNOSUPPRESSANTS

 M MUSCULO-SKELETAL SYSTEM

 N NERVOUS SYSTEM

 P ANTIPARASITIC PRODUCTS, INSECTICIDES AND REPELLENTS

 R RESPIRATORY SYSTEM

 S SENSORY ORGANS

 V VARIOUS