Complex sentence: In El Salvador, the disease has become the second leading cause of death among adult men, and according to a recent editorial, it has been estimated that this largely unknown epidemic has caused the premature death of at least 20,000 men in the region.
Split into simpler sentences: In El Salvador, the disease has become the second leading cause of death among adult men. According to a recent editorial, it has been estimated that this largely unknown epidemic has caused the premature death of at least 20,000 men in the region.