Marshall Henry Klaus (June 6, 1927 – August 15, 2017) was a neonatologist who studied the effects of maternal bonding after birth.
[1] He graduated from Case Western Reserve University Medical School specializing in pediatric pulmonology and neonatal development.
During his year as Chief Resident, the hospital opened a ward for parents to stay with their children and was interested in the better patient care and satisfaction.
[2] The research came under criticism with opponents citing the inherent problems studying human behavior and claiming that the improved bonding effect is small and limited.
[4] Many hospitals began to change their procedures to give new parents time with their infants, allow partners in the delivery room, and the baby's siblings to visit based on the book's recommendations.