Seasonal Affective Disorder Market, by Type (Fall & Winter Seasonal Affective Disorder, Spring & Summer Seasonal Affective Disorder, and Others), by Treatment (Light Therapy, Medications, Psychotherapy, Counselling, and Others), by End User (Hospitals, Clinics, Research Institutes, and Others), and by Region (North America, Latin America, Europe, Asia Pacific, Middle East, and Africa) - Size, Share, Outlook, and Opportunity Analysis, 2020 - 2027