Children with similar exposures appeared to have a higher risk of developing cancer later. (science.sciencemag.org)
(The TD International Index Fund is just one of many offering similar exposure: others include unhedged ETFs from iShares, BMO and Vanguard.) (moneysense.ca)
So if your portfolio includes bonds in both registered and non-registered accounts, you can use ZAG and ZDB to get similar exposure in both accounts with maximum tax - efficiency. (moneysense.ca)