Citation 1031
Beers MH and Berkow R (eds.), 2005. Bacterial infections, The Merck Manual, 17th Edition (Rahway, NJ: The Merck Publishing Group).
http://www.merck.com/mrkshared/mmanual/s.../chapter227/227a.jsp.
http://www.merck.com/mrkshared/mmanual/s.../chapter227/227a.jsp.


