Answer:
Roughly around 250,000 to 500,000 WORLDWIDE
But in the U.S alone about 3,000 to 49,000 (from 1976- 2006)
Stop allowing drug companies to advertise directly to the consumer.
Restrain the insurance companies. Get a handle on fraud, and prosecute
(and punish) heavily. Just cut the prices. Stop focusing on the
individuals. Create a national health plan.
During the childhood, the physical development is more rapid in infancy.
From birth to eight years old, it is a time of tremendous growth. Between birth and age three a child ordinarily doubles in height and quadruples in weight. Body proportions shift, in order for the infant whose head is almost one-fourth of its body weight altogether now is a toddler with a more balanced, adult-like appearance. Around this age a typical three year old will have mastered walking, sitting, scribbling, toilet-training, using a utensil, and sufficient eye-coordination despite rapid growth.
Between ages five and three children will have developed fine-motor skills.
Physical growth typically slows down between five and eight years old, whilst body proportions and motor skills are becoming more sufficient.
Children also develop a spoken vocabulary that ranges between 300 and 1,000 words within the first three years of life.
I hope this answered your question, good luck on your assignment. Education.stateuniversity.com is a handy tool for questions like this as well.
Your tone of voice should be friendly, professional, and sincere to keep a patient engaged. Improving your tone can be as simple as smiling, taking a deep breath, and approaching with a genuine desire to help.