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Gunnar RM, Loeb HS, Pietras RJ, Tobin JR Jr.Gunnar RM, et al. Among authors: pietras rj.Med Clin North Am. 1970 Jan;54(1):235-46.Med Clin North Am. 1970.PMID: 4904131Review.No abstract available.
Santos DE, De la Paz A, Pietras RJ, Tobin JR Jr, Gunnar RM.Santos DE, et al. Among authors: pietras rj.Br Heart J. 1969 Nov;31(6):693-9. doi: 10.1136/hrt.31.6.693.Br Heart J. 1969.PMID: 5358149Free PMC article.No abstract available.
Gunnar RM, Loeb HS, Pietras RJ, Tobin JR Jr.Gunnar RM, et al. Among authors: pietras rj.JAMA. 1967 Dec 25;202(13):1124-8.JAMA. 1967.PMID: 6072706No abstract available.
Blain CM, Anderson TO, Pietras RJ, Gunnar RM.Blain CM, et al. Among authors: pietras rj.Arch Intern Med. 1970 Aug;126(2):260-5.Arch Intern Med. 1970.PMID: 4914779No abstract available.