Complex sentence: Rickets, a childhood disease characterized by impeded growth, and deformity, of the long bones, today it is largely found in low income counties in Africa, Asia or the Middle East, its spectrum of causes differs in different parts of the world.
Split into simpler sentences: Rickets, a childhood disease characterized by impeded growth, and deformity, of the long bones, is today found largely in low income counties in Africa, Asia and the Middle East. Its spectrum of causes differs in different parts of the world.