At least 145 people have given firsthand accounts of sexual misconduct by a former Ohio State University doctor, the Associated Press reports. Richard Strauss has been accused of groping male athletes in over 16 sports, as well as other students, between the years of 1979 and 1997. The law firm Perkins Coie, which is investigating the allegations, has interviewed over 335 people so far, including the 145 people who spoke about their experiences. Interviewees include administrators, athletics staff, and health and human resources employees, though the firm said some key witnesses are now dead. “The significant passage of time that has occurred since Strauss’ tenure at the university brings with it the additional challenge of scattered witnesses who must first be identified, then located, and then willing to cooperate,” Provost Bruce McPheron told an Ohio State committee. Investigators have already searched 525 boxes of university documents and that number could double, they said. Several former athletes have said Rep. Jim Jordan (R-OH), who was an assistant coach at the university, knew about allegations against Strauss and did not act to protect students. Jordan denied the accusations.