The prevalence of pulmonary arterial hypertension in patients with mixed connective tissue disease: a systematic review and meta-analysis.

Objectives: The prevalence and outcome of mixed connective tissue disease-associated pulmonary arterial hypertension (MCTD-PAH) has not been well understood. Our aim was to review the current knowledge on the prevalence, severity, and mortality of MCTD-PAH. We also aimed to examine the prevalence trend of MCTD-PAH over the years.

Therapeutic regimens for vitamin D deficiency in postmenopausal women: a systematic review.

Introduction: We reviewed the most effective vitamin D3 regimen for vitamin D deficiency in postmenopausal women.

Material And Methods: We searched for studies and clinical trials conducted on healthy postmenopausal women published on PubMed from 2000 to 2018 using the term "Vitamin D deficiency" combined with the following terms: "dose", "supplement", "supplementation", "cholecalciferol" or "cholecalciferol dose". We identified 1376 articles which matched the search criteria.

Therapeutic and maintenance regimens of vitamin D3 supplementation in healthy adults: A systematic review.

Studies carried out assessing the effect of different doses of cholecalciferol (vitamin D3) on correcting serum 25-hydroxyvitamin D deficiency in healthy adults are limited and review studies are lacking. Moreover, the maintenance dose and its duration offered by these few studies are inconsistent. We performed a systematic review of randomized clinical controlled trials (RCTs) that assessed the effect of different doses of vitamin D3 on serum 25(OH)D in healthy adults.