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There are approximately 3 million unintended pregnancies in the United States each year.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.