Hong Kong should require a double-check mechanism for all embryo biopsy procedures and overhaul its reproductive technology law, the city’s largest political party has proposed following a rare mix-up of specimens at a fertility clinic.The Democratic Alliance for the Betterment and Progress of Hong Kong (DAB) issued the call on Thursday, nearly a month after the Council on Human Reproductive Technology suspended most operations at Heal Fertility in Central upon discovering that embryo biopsy...