Hearing Aids Market, By Product Type (Hearing Aid Devices, Hearing Implants), By Type of Hearing Loss (Conductive Hearing Loss, Sensorineural Hearing Loss, Mixed Hearing Loss), By Patient Type (Adults, Paediatrics), By Sales Channel (Otolaryngology Clinics, E-commerce, Retail Stores, Others), By Geography (North America, Latin America, Europe, Asia Pacific, Middle East & Africa)