Assessing the infant hypothalamic–pituitary–adrenal axis in SPRING, a large community-based cluster randomised controlled trial in rural India assessing the impact of a home visits intervention on early child growth and development (The SPRING-ELS sub-study). (September 2017) - Bhopal, Sunil; Verma, Deepali; Roy, Reetabrata; Kumar, Divya; Divan, Gauri; Kirkwood, Betty