About: http://webisa.webdatacommons.org/139718844

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Systemic endocrine diseases and hormonal changes such as accompany pregnancy may lead to melanin production, which can cause progressive darkening of the skin and even the conjunctiva.
http://www.w3.org/ns/prov#wasQuotedFrom	eyecareamerica.org