Guest Consultants

Meet the Guest Consultants who work with International Vet Services. At IVS we offer a large network of veterinary specialists who are always keen to deliver seminars or CE courses in order to promote their discipline and share expertise with colleagues of all different horizons and background.


Dr. Mark Dirven

DVM, Dipl ECVIM (Cardiology)

Mark graduated from Utrecht University The Netherlands in 2004. Het gained experience as a clinician in both (first-opinion) private practice and academia. In March 2017 he passed his certifying exam to become a European specialist in cardiology, after 5 years of formal training and working in private practice. His background in both private practice and academia helps him his clinical work, but also in his way of lecturing and teaching. He is valued for his hands-on approach to translating science into practice. As a result he travels Europe and China to lecture.

In January 2019 he moved from the Netherlands to Sweden where he joined the team of AniCura Albano and Bagarmossen animal hospitals where he is mainly involved in tutoring, clinical work and research. Furthermore he is involved in development of post graduate education in cardiology for the AniCura group in Sweden and residency training programmes in cardiology.

Dr. Inma Cerrada Serra

BVS, MS, MVM, Dipl ACVIM (Cardiology)

Dr. Inma graduated from Cardenal Herrera-CEU University in Valencia (Spain), then completed a rotating internship in Small Animal Medicine & Surgery at Fregis referral hospital in Paris (France), followed by a second Small Animal Rotating internship at the National Veterinary University of Nantes (France).

She then completed a Master of Science and Welfare of Laboratory Animals at the University of Barcelona (Spain) before completing a Doctorate of Philosophy in Science of Health at the University of Valencia (Spain). Her research was focused on “ Study of the effect of pro-inflammatory cytokine Interleukin-1alpha and the Hypoxia Inducible Transcription Factor- 1 Alpha on the survival and therapeutic potential of mesenchymal stem cells in the treatment of myocardial infarction”.

Dr Inma then completed a Master of Veterinary Medicine, while completing her ACVIM residency in Cardiology (in 2018-2021) at the Royal Veterinary College of London (UK).

She became a Diplomate of the American College of Veterinary Internal Medicine Board, specialist in Cardiology in July 2022.

Dr. Merja Laitinen


Dr. Laitinen is a diplomate of the European College of Veterinary Diagnostic Imaging. She earned her DVM in 2001 and her PhD in 2011 from the University of Helsinki. She conducted clinical work for her PhD at Kansas State University and the University of Illinois (2007-2009). She completed her radiology residency in Scandinavia, traveling mostly between Helsinki, Finland; Uppsala, Sweden; and Oslo, Norway.

She worked for the University of Helsinki Faculty of Veterinary Medicine for almost 11 years, first as a hospital veterinarian (2004-2005) and since 2005 as a clinician teacher in diagnostic imaging until early 2015. Before joining to VetCT she worked in teleradiology for Idexx Telemedicine consultants for almost 2 years.

Dr. Anna Tidholm

DVM, PhD, Dipl ECVIM (Cardiology), Associate Professor

Dr. Anna Tidholm is Associate Professor (docent), Diplomate ECVIM (Cardiology) and has worked as Staff Veterinarian at Anicura Albano Animal Hospital since 1986. The animal hospital now employs over 70 veterinarians, 200 nurses and receives approximately 40,000 patients per year. Anicura Albano Heart Center employs 6 veterinarians (2 Diplomates, 2 Swedish veterinary specialists in cardiology, 1 resident, 1 intern) and 2 nurses and receives approximately 1300 patients for cardiologic examination per year.

A prolific contributor to research in veterinary cardiology with approximately 60 publications in international referred scientific journals and over 200 other publications, Dr. Tidholm has been Associate Editor of the Journal of Veterinary Cardiology since 2013. Dr. Tidholm is also a supervisor for two PhD students in veterinary cardiology at the College of Veterinary studies, University of Agriculture, Uppsala, Sweden and Program director for a residency in veterinary cardiology at Anicura Albano Animal Hospital.

As Hjalmar Håkansson Foundation award recipient (1994) and the first (and hitherto only) female recipient since 1898 of the Peter Hernquist gold medal in 2010, Dr. Tidholm was recognized by the Swedish Veterinary Magazine in 2013 as Veterinarian of the Year.


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