A Watchman is a device that can help prevent blood clots from leaving the heart. However, the procedure to insert the device carries its risks, including cardiac tamponade and ischemic stroke.

A panniculectomy is surgery to remove excess skin from the lower abdomen. It is different from a tummy tuck, which is a cosmetic procedure that removes excess skin and fat and tightens the abdominal ...

As the amount of oxidants or the oxidation time increases, the bond-angle strain induced by the enlarging hole increase, and finally, it results in the nanotube opening 4. Adapted from Kosynkin, D. V.