19665
In the first half of the 20th century , great progresses were made in the pathophysiologic understanding of hemorrhagic and traumatic shocks , while researchers devoted relatively little attention to septic shock .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None