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Taken together , this points to a lack of coherence within materials directed to patients and suggests the need to do coordinated research among stakeholders to address two related issues : ( 1 ) determining who are the actors best positioned to send messages surrounding intrafamilial communication to patients and ( 2 ) addressing the content of messages conveyed in patient materials . European Journal of Human Genetics advance online publication , 23 January 2013 ; doi : 10 . 1038 / ejhg . 2012 . 286 .
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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