U.S. trainees: Alabama, Alaska, Arkansas, Arizona, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Washington, Wisconsin.

International trainees: Argentina, Australia, Belgium, Bermuda, Brazil, Canada, Chile, China, Colombia, Costa Rica, Cyprus, Denmark, Dominican Republic, Ecuador, England, France, Germany, Ghana, Greece, Guatemala, Hong Kong, India, Iran, Ireland, Israel, Italy, Jamaica, Japan, Jordan, (Republic of) Korea, Kuwait, Lebanon, Mexico, Netherlands, New Zealand, Norway, Oman, Panama, Peru, Philippines, Portugal, Russia, Saudi Arabia, Scotland, Singapore, Slovenia, South Africa, Spain, Sweden, Switzerland, Taiwan, Thailand, Trinidad, Turkey, United Arab Emirates, Uruguay, Zambia.