108512
It is used as a treatment for wintertime seasonal affective disorder and in circadian rhythm disorders , such as delayed sleep phase disorder .
 circadian rhythm disorders, delayed sleep phase disorder
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 circadian rhythm disorders, delayed sleep phase disorder