He compared intra-individually the effect of six different topical products (Hirudoid cream, various heparin and heparin他比较了六种不同外用药物（喜疗妥乳膏，各种肝素和类肝素乳膏）对试验人为造成的浅表伤痕的疗效，受试者为健康志愿者。