public async Task <double> CalculateBMI() { Tuple <double, double> wfaTuple = await AnthroStatsService.GetWFA(Weight, "365", Sex).ConfigureAwait(false); WfaZscore = wfaTuple.Item1; WfaPercentile = wfaTuple.Item2; BMI = await AnthroService.GetBMI(Weight, Height).ConfigureAwait(false); BMI = Math.Round(BMI, 1); return(BMI); }