What group of elements does the shaded area in the following periodic table indicate? 
Definitions:
Analgesic Drugs
Medications designed to relieve pain without causing loss of consciousness, often used for headaches, muscle aches, and arthritis.
Surgical Treatment
Medical procedures involving incisions with instruments, performed to repair damage or arrest disease in a living body.
Ayurvedic Medicine
A system of traditional medicine native to India, emphasizing balance in bodily systems through diet, herbal treatment, and yogic breathing.
Body
The physical structure of a person or an organism, comprising the skeletal, muscular, and organ systems.
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