Hormone therapy: gallbladder risk is lower with a patch than a pill.
D000279:Administration, Cutaneous; D000284:Administration, Oral; D002764:Cholecystitis / Q000139:chemically induced* / Q000517:prevention & control; D004958:Estradiol / Q000009:adverse effects*; D015914:Estrogen Replacement Therapy / Q000009:adverse effects*; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D017698:Postmenopause; D016387:Women's Health
D004958:Estradiol