1368
This study investigated the hypothesis that the human platelet antigen - 1 ( HPA - 1 ) polymorphism may influence the antiplatelet effects of glycoprotein ( GP ) IIb / IIIa inhibitors .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 None