So far all the cases of illness have been linked to infant formula from Sanlu, the company at the heart of the scandal.
High air pollution levels have been linked to infant mortality.
A sense of incompetence as a caregiver has been identified as a risk factor in the development of maternal mental health problems [ 61, 70] and has been linked to infant developmental outcomes [ 61].
Numerous bioactives in milk such as leptin, adiponectin, relaxin, tumor necrosis factor, and others have been linked to infant developmental trajectories (Bartol and Bagnell 2012; Power and Schulkin 2013; Liu et al. 2014).
Mothers were linked to infants identified by an ICD-9 birth code by a unique 'family' identifier, indicating enrolment under the same plan, relationship status of dependent and year of the child's birth.
In a larger sample of Californian parents, in 1978, years of education were linked to infant-mortality rates.
We investigated to what extent variations in family and pension policies are linked to infant mortality and old-age excess mortality.
In Burundi, it can be linked to infant and child feeding and hygiene practices, insufficient access to food, weak access to basic social services like health and education, as well as underlying structural causes including demography, access to land and agricultural production.
Cigarette smoking has been linked to reduced infant birth weight, increased pre-term births, and increased infant mortality [ 19, 20].
Maternal exposure to high levels of air pollution has also been linked to low infant birth weight.
