http://www.sec.gov/Archives/edgar/data/1000275/000114036116060573/form424b2.htm
http://www.sec.gov/Archives/edgar/data/1499717/000114420416093300/v436516_424b5.htm
http://www.sec.gov/Archives/edgar/data/1243429/000119312516532911/d170585d424b3.htm
http://www.sec.gov/Archives/edgar/data/1668788/000119312516533749/d152060d424b5.htm
http://www.sec.gov/Archives/edgar/data/40729/000119312516533986/d141826d424b2.htm
http://www.sec.gov/Archives/edgar/data/40729/000119312516533995/d133979d424b2.htm
http://www.sec.gov/Archives/edgar/data/1574540/000157454016000083/a424b5prospectussupplement.htm