1.   SCIENTISTS believe they are a step nearer to finding the cause of Cot Death Syndrome, which kills hundreds of babies each year.

2.   SCIENTISTS are one step closer to discovering the cause of cot death syndrome which kills hundreds of babies each year.

3.   SCIENTISTS believe they are one step nearer to discovering the cause of Cot Death Syndrome, which kills hundreds of babies every year.

4.   I give birth to six babies every year.

5.   Koalas breed during the summer months and females generally produce a single baby each year.