This came about primarily, says Professor Lin Mao-hsiung, "because of frequent trips back to Taiwan by the US-based forensics expert Li Chang-yu."
警政系統的刑事鑑識體系逐步踏入正軌要到民國六十年代之後，「主要與刑事鑑識專家李昌鈺回國帶動風潮有關」，警大刑事系教授林茂雄說。