Siddharth S Mishra PT. “Energy Expenditure Index (EEI) for Single Limb Stand Non Weight Bearing Stair Case Climbing Using Axillary Crutches and Standard Walker in Healthy Individuals”. Asian Pacific Journal of Health Sciences, vol. 5, no. 4, Dec. 2018, pp. 108-12, doi:10.21276/apjhs.2018.5.4.16.