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267 Studies found for: every 12 hours AND hours | Mexico

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Map Legend
Region Name Number of Studies
World [map] 267
North America 267
United States 152 [studies]
Alabama 76 [studies]
Arizona 69 [studies]
Arkansas 35 [studies]
California 125 [studies]
Colorado 68 [studies]
Connecticut 42 [studies]
Delaware 20 [studies]
District of Columbia 18 [studies]
Florida 113 [studies]
Georgia 79 [studies]
Hawaii 7 [studies]
Idaho 27 [studies]
Illinois 74 [studies]
Indiana 64 [studies]
Iowa 23 [studies]
Kansas 39 [studies]
Kentucky 47 [studies]
Louisiana 54 [studies]
Maine 16 [studies]
Maryland 54 [studies]
Massachusetts 61 [studies]
Michigan 74 [studies]
Minnesota 43 [studies]
Mississippi 22 [studies]
Missouri 73 [studies]
Montana 26 [studies]
Nebraska 48 [studies]
Nevada 40 [studies]
New Hampshire 13 [studies]
New Jersey 71 [studies]
New Mexico 30 [studies]
New York 92 [studies]
North Carolina 82 [studies]
North Dakota 12 [studies]
Ohio 103 [studies]
Oklahoma 55 [studies]
Oregon 52 [studies]
Pennsylvania 86 [studies]
Rhode Island 24 [studies]
South Carolina 62 [studies]
South Dakota 15 [studies]
Tennessee 54 [studies]
Texas 117 [studies]
Utah 34 [studies]
Vermont 14 [studies]
Virginia 67 [studies]
Washington 69 [studies]
West Virginia 12 [studies]
Wisconsin 46 [studies]

Click on a [map] link to show a map of that region.

Click on a [studies] link to search within your current results for studies in that region. Use the back button to return to this list and try another region.

Studies with no locations are not included in the counts or on the map.

Studies with multiple locations are included in each region containing locations.