Assertion: plantar wart | /r/CreatedBy | infection
Facets:
value: by human papillomavirus types
type: OTHER
value: generally
type: MANNER
Source sentences:
text: Plantar warts are benign epithelial tumors generally caused by infection by human papillomavirus types 1, 2, 4, 60, or 63, but have also been caused by types 57, 65, 66, and 156.