APA

Robb-Nicholson C., . (20010628). By the way, doctor. NOw that pollen season is underway, I need a decongestant. The one I've used for years was taken off the market because it contained PPA. What is PPA, and why is it a problem? What can I use instead?. : Harvard women's health watch.

Chicago

Robb-Nicholson C, . 20010628. By the way, doctor. NOw that pollen season is underway, I need a decongestant. The one I've used for years was taken off the market because it contained PPA. What is PPA, and why is it a problem? What can I use instead?. : Harvard women's health watch.

Harvard

Robb-Nicholson C., . (20010628). By the way, doctor. NOw that pollen season is underway, I need a decongestant. The one I've used for years was taken off the market because it contained PPA. What is PPA, and why is it a problem? What can I use instead?. : Harvard women's health watch.

MLA

Robb-Nicholson C, . By the way, doctor. NOw that pollen season is underway, I need a decongestant. The one I've used for years was taken off the market because it contained PPA. What is PPA, and why is it a problem? What can I use instead?. : Harvard women's health watch. 20010628.