What do you do for a living? <a href=" http://www.acadianacenterforthearts.org/natural-viagra-youtube.pdf#hemp ">viagra gdzie kupic</a> While it is still unclear exactly how this extra copy causes the symptoms of Down syndrome – also known as trisomy 21, its presence in a person’s genetic code is associated with delayed cognitive ability, slowed physical development and a whole host of health conditions, including congenital heart disease, cancer and early on-set Alzheimer’s.