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The trial , which was conducted at The Johns Hopkins Medical Institutions and the Copper Ridge Institute , also is investigating the specific benefits of depression reduction for patients and caregivers . Its report on possible redevelopments in nurse education for Queensland considered that the community of that time needed educational programmes conducted in educational institutions , where the student was regarded as a student rather than a trainee , where an atmosphere of learning prevailed , and where learning could occur more readily . In 2000 , surgeons at the Washington University School of Medicine in St. Louis conducted the first pilot trial of robot-assisted heart surgery1 , and a wide range of procedures now use mechanized instruments . In general , all work conducted in a watercourse will be conducted in a dry channel during the dry period , generally defined as June 15-October 15 , and in accordance with terms and conditions in California Department of Fish and Game Code section 1600 Streambed Alteration Agreements and any conditions imposed by the state water quality control board , air quality control board , Corps permits , county grading permits , etc. This past year , we conducted several combined activities in Central America , including the Peacekeeping Operations North ( PKO-North ) exercise , hosted by Honduras and attended by 20 nations .