Key points are not available for this paper at this time.
Ronald A. Bernstein, Linda H. Werner, Alfred A. Rimm, Relationship of Gallbladder Disease to Parity, Obesity, and Age: A Study of 62,739 Weight-Conscious Women, Health Services Reports, Vol. 88, No. 10 (Dec., 1973), pp. 925-936
Bernstein et al. (Mon,) studied this question.