Sometime you may have faced (or you will face) one of these situations
In either of these cases the Single Citation Matcher feature in PubMed comes to your rescue
In the PubMed home page click the Single Citation Matcher link (lower half, centre column)
You are not sure if 157 is the volume number or page number, so leave it out. Click Search. The result page shows two references, so it is easy to locate the one you want
The Single Citation Matcher will not yield results for journals not covered in PubMed, or even issues of indexed journals not covered in PubMed. In such cases, you may have to search Google / the journal website or more resources. This clearly indicates the need for accurate referencing!