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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.