Impact of Lean Manufacturing Practices on Waiting Time of Patients in Outpatient Department (OPD): A Study in the Sri Lankan Public Healthcare Industry. int.jour.sci.res.mana [Internet]. 2024 May 12 [cited 2024 Jul. 22];12(05):6320-3. Available from: https://ijsrm.net/index.php/ijsrm/article/view/5295