Is it true that certain birth control pills (ocella/yaz/yasmin) may be leading to gallbladder issues?

Controversial: Women have twice the risk for gallstones compared to men. Both estrogen and Progesterone increase the risk of gallstones. Several studies have reached conflicting conclusions, one canadian study that suggested a 20% increased risk in contrast to an english study where the risk was 10% lower compared to women not taking bcp. This suggests that if there is a risk, it is not clinically significant.