## S3 method for class 'sarprobit':
coef(object, ...)
## S3 method for class 'sarprobit':
coefficients(object, ...)
## S3 method for class 'semprobit':
coef(object, ...)
## S3 method for class 'semprobit':
coefficients(object, ...)
## S3 method for class 'sartobit':
coef(object, ...)
## S3 method for class 'sartobit':
coefficients(object, ...)sarprobit, semprobit or sartobit with model fits