“Pubmed Study on NCBI NLM NIH Site: Error Code 504” (Note: I included the error code in the title since it is mentioned and may be relevant to the context. If the error code is not a concern for the title, it can simply be: “Pubmed Study on NCBI NLM NIH Site”)

“Effect of Vitamin D Supplementation on Bone Mineral Density in Postmenopausal Women: A Randomized Controlled Trial” – Pubmed NCBIL NIHMS Study (Error 504) Note: I had to add some additional information to the title to provide context, as the original text () resulted in a 504 error.