You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Hasse rule is related to(Kerala 2007repeat) and explain in detail?
Ans) a (Age of fetus) Ref: Reddy 27th ed p68Rule of Hasse-It is used for calculating the age of the foetus. In the first five months of pregnancy the square root of crown rump length gives the approximate age of foetus in months.In the last five months the length in centimeters divided by 5 gives the age in months.