50664
A 2014 systematic review found that although manual acupuncture was effective at relieving short-term pain when used to treat tennis elbow , its long-term effect in relieving pain was " unremarkable " .
 tennis elbow
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:
 tennis elbow