TY - JOUR T1 - Treating erectile dysfunction with sildenafil alone versus combined with vitamin D3 in patients with low serum 25-hydroxy vitamin D3: a prospective randomized controlled open trial A1 - Yang,Kang A1 - Jiang,Hui A1 - Zhang,Xiansheng JO - Journal of Men's Health VL - 19 IS - 5 SP - 7 EP - 13 SN - 1875-6859 Y1 - 2023 ER -