get https://script.google.com/macros/s/AKfycbwmqn0UCDkLk7wOPDoEhTSutiiXYPDIoX2mW5U38fEAqsKw_YZxLsTwFofVITVe_Fi4/exec
Retrieves standard reference values for various left ventricular (LV) parameters based on a patient's age, gender, and whether papillary muscles were included in the mass calculation.
The API intelligently uses the provided age to find the appropriate age_grp (e.g., an age of 54 years
will match the "50-59" age group in the underlying spreadsheet data).