<prompt> Alfred Grotjahn is famous forEpidemiologyBiostatisticsVaccinationSocial hygiene  <response>: In 1911, the concept of social medicine was revived by Alfred Grotjahn 1869-1931 of Berlin who stressed the impoance of social factors in the aetiology of disease, which he called social pathology. Others called it geographical pathology and population pathology. Ref : Park 23rd edition Pgno : 8 