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2. Incentive spirometer - Wikipedia

   en.wikipedia.org/wiki/Incentive_spirometer

   An incentive spirometer is a handheld medical device used to help patients improve the functioning of their lungs. By training patients to take slow and deep breaths, this simplified spirometer facilitates lung expansion and strengthening. Patients inhale through a mouthpiece, which causes a piston inside the device to rise.

3. Walgreens Boots Alliance - Wikipedia

   en.wikipedia.org/wiki/Walgreens_Boots_Alliance

   Walgreens Boots Alliance, Inc. (WBA) is an American multinational holding company headquartered in Deerfield, Illinois. [2] The company was formed on December 31, 2014, after Walgreens bought the 55% stake in Alliance Boots (owner of Boots UK Limited) that it did not already own.

4. Hearing aids are now available over the counter at Walmart ...

   www.aol.com/news/hearing-aids-now-available-over...

   Best Buy is selling 20 different over-the-counter hearing aids online with prices ranging from $200 to $3,000, according to the company.The electronics retailer will offer the devices in 300 ...

5. Spirometer - Wikipedia

   en.wikipedia.org/wiki/Spirometer

   A spirometer is an apparatus for measuring the volume of air inspired and expired by the lungs.A spirometer measures ventilation, the movement of air into and out of the lungs.

6. 5 Things You Need to Know If You Buy Walgreens Today - AOL

   www.aol.com/finance/5-things-know-buy-walgreens...

   The stock for this pharmacy chain has struggled mightily this year.

7. What Are Over-the-Counter Stocks and How Do I Buy Them? - AOL

   www.aol.com/finance/over-counter-stocks-buy-them...

   Over-the-Counter stocks aren't traded on normal stock market exchanges. There are many factors that weigh on OTC stocks' availabilities and the degree of investment risks. Therefore, investors ...