Sir m ye khna caah rha hu aap apni yk book likhiye kyuki aap ka btane ka jo tareeka h jo basic se lekr chlte hain aap mujhe yesa lgta h ki aap ki yk book hona chiye jisse jitne medical student hain and doctors ke liye helpful ho ye meri requeste rhegi apse
Nothing is universal. You have to adjust the length as per individual baby. It's easy to calculate and You don't need to measure the distance. Useful in emergency.
Sir I always understand your classes but I've never got a chance to practice I wish soon I will get an opportunity to do so that I can do as per your steps ... thank you so much.