Declarations
Funding Statement: This project was supported by the Kangaroo
Foundation and the Integral Kangaroo Mother Care Program in Bogotá,
Colombia.
Financial Disclosure : The authors have no financial
relationships relevant to this article to disclose.
Conflict of Interest: The authors have no conflicts of interest
relevant to this article to disclose.
Availability of data and material: on request from the authors.
Code availability: Not applicable.