In March 1994, PHR sent a team of physicians to Mozambique to assess the frequency and severity of injuries among civilians and military personnel caused by landmines. The investigation revealed that not only were civilians more likely to be injured by landmine explosions, but hospital records failed to adequately reflect the extent of this disparity; civilians were injured at a rate eight times higher than noted in local records. These findings were used as supporting evidence in the PHR-sponsored International Campaign to Ban Landmines which later led to the 1997 ratification of the International Mine Ban Treaty. The work led to PHR and the others involved in the work receiving the Nobel Peace Prize.