sentences:  The work gained instant recognition as a major advance in maternity care, and featured as a major factor in the planning and launching of the international safe motherhood movement in 1987./ref>
  Back in Zaria, the activities of the team Kelsey Harrison led, that included sociologists succeeded in eradicating VVF in the Zaria area in the 1970s, although it resurged after he had left the area.Besides Harrison's heavy clinical, teaching and research activities, he took active part in various community services and international assignments throughout his working life and afterwards.