TRENTON, N.J. (AP) - Two drug companies announced Monday they will collaborate on developing the first all-in-one, one-a-day pill to treat HIV infection - a long-sought goal that would make it much easier for patients to stick with their medication. Currently, the best AIDS treatment requires patients to take two to four pills a day. Less than a decade ago, many patients had to take 25 to 30 pills a day, often at precise times and under specific conditions such as with food, making it extremely difficult for patients to stick to the complex schedule. Missing doses makes it easier...