Global Onychomycosis Market Assessment, By Treatment Type [Drugs, Laser Therapy, Photodynamic Therapy], By Indication [Distal Subungual Onychomycosis, White Superficial Onychomycosis, Proximal Subungual Onychomycosis, Candidal Onychomycosis, Total Dystrophic Onychomycosis], By Distribution Channel [Hospitals, Dermatology Clinics, Retail Pharmacies, Online Pharmacies], By Region, Opportunities and Forecast, 2017-2031F