[19th German therapeutic week in Karlsruhe from 3 to 9 September 1967]. [No authors listed] Med Klin. 1967 Oct 13;62(41):1573-605. PMID: 5592144
[The development of hospital obstetrics in the Federal Republic of Germany]. Rummel H. Med Welt. 1966 Nov 19;47:2538-40. PMID: 5955409
Breakdown of the Present Hospital System-The Freedom of Hospitals Claimed. Thomson H. Glasgow Med J. 1889 Feb;31(2):97-101. PMID: 30434774