Refractory rickets-MD/DCH/DNB Pediatrics Exam preparation

Refractory rickets is a frequently asked question in our exams where we are stumped when we try to answer. I have tried to simplify this topic for postgradutes. Endocrinologists-Early apologies if i have missed out on any valid points. This is more of a laboratory approach than a clinical approach lecture.If you want anymore points to be discussed,please let me know in the comments or DM me. The lecture is only to help medical students and healthcare professionals to understand the basic concepts and enable them to approach a case/write in theory exams.I would like to reiterate that the information provided is a compendium of data obtained from various sources and the rights lie with the respective authors. P.S. I have tried to record this video with zoom.Sorry if you find any glitches