<prompt> Hasses formula used in pregnancy to?Estimate fetal ageIdentify fetal blood groupIdentify fetal sexIdentify fetal congenital malformations  <response>: ANSWER: A Estimate fetal ageREF: Textbook of Forensic Medicine and Toxicology by Nagesh Kumar Rao - Page 321Hasses formulaIf the crown heel length is known then the intrauterine age of fetus is calculated as:If CH length is up to 25 cm thenIU age Square root of CH lengthIf the CH length is 25 cm thenIU age 15 of CH length 