Formulas for Body surface areas creatinine clearance calculations?

Woman: GFR (mL/min) = 1,04*[140-age (year)]*weight (kg)

P - Kr (µmol/L)

Man: GFR (mL/min ) = 1,23*(140-age (year)*weight (kg)

P - Kr (µmol/L) Woman: GFR (mL/min) = 1,04*[140-age (year)]*weight (kg)

P - Kr (µmol/L)

Man: GFR (mL/min ) = 1,23*(140-age (year)*weight (kg)

P - Kr (µmol/L)