Sleep - training is potentially damaging to the developing brains of babies and there is no question about it. (parenting-with-love.com)
What effect does poverty have on the developing brains of babies and toddlers? (patillinois.org)
The under - developed brain of baby born at 31 weeks may cause apnea (loss of breathing) that subsides as the baby grows and usually doesn't require long term treatment / medications. (newkidscenter.com)