1. American Academy of Family Physicians (AAFP), American Academy of Pediatrics (AAP), American College of Physicians (ACP), American Osteopathic Association (AOA) 2007 Joint principles of the patient-centered medical home http://www.medicalhomeinfo.org/downloads/pdfs/jointstatement.pdf
2. American College of Physicians (ACP) 2006 The impending collapse of primary medicine and its implications for the state of the nation's health care http://www.acponline.org/advocacy/events/state_of_healthcare/statehc06_1.pdf
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5. Delivery of health services to migrant and seasonal farmworkers;Arcury;Ann Rev Public Health,2007