Canada’s largest mental health and addiction treatment and research centre is calling for the legalization of marijuana, with strict controls that would govern who could buy weed, from where, and in what quantity. In a policy statement released Thursday, the Centre for Addiction and Mental Health in Toronto said cannabis should be sold through a government-controlled monopoly and with limited availability and an age limit, possibly through outlets similar to provincially operated liquor stores. “Legalization means that we remove all penalties for cannabis possession and use by adults,” said Jurgen Rehm, director of social and epidemiological research at CAMH. “Canada’s...