Drupal-Bibcite0<style face="normal" font="default" size="100%">Role of thiopurine methyltransferase activity in the safety and efficacy of azathioprine in the treatment of pemphigus vulgaris.</style><style face="normal" font="default" size="100%">Role of thiopurine methyltransferase activity in the safety and efficacy of azathioprine in the treatment of pemphigus vulgaris.</style>