CDMA (Code Division Multiple Access) and GSM (Global System for Mobiles) are shorthand for the two major radio systems used in cell phones. Both acronyms tend to group together a bunch of technologies run by the same entities. In this story, I'll try to explain who uses which technology and what the real differences are.
Dairy. Dairy products provide nutrients that are critical for bone health, including calcium, potassium and vitamin D. Dairy is also a source of protein. The benefit dairy provides for bones makes consumption especially critical for growing children, whose bone mass is developing.
Dairy foods, calcium and cancer. Dairy foods such as milk, yoghurt and cheese are a rich source of dietary nutrients. They provide a good source of dietary calcium and contain protein, vitamin A, vitamin B 12, magnesium, phosphorus, potassium, riboflavin and zinc. Table 1 shows the calcium content of some common dairy foods.