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IP address: 3.81.72.247
Time: 2024-03-29T14:31:54Z
URL: http://scholar.google.com/scholar_lookup?title=Efficacy+of+17alpha-hydroxyprogesterone+caproate+in+the+prevention+of+premature+labor.&year=1975&author=Johnson&journal=N+Engl+J+Med.&volume=293&issue=14&pages=675-680&doi=10.1056%2FNEJM197510022931401&pmid=1099445