1 Department of Plastic, Reconstructive and Hand Surgery, VU University Medical Center, Amsterdam, The Netherlands Department of Plastic and Reconstructive Surgery and the Burn Center, Red Cross Hospital, Beverwijk, The Netherlands Department of Plastic, Reconstructive and Hand Surgery, VU University Medical Center, Amsterdam, The Netherlands Department of Biostatistics, VU University Medical Center, Amsterdam, The Netherlands Department of Plastic, Reconstructive and Hand Surgery, VU University Medical Center, Amsterdam, The Netherlands Department of Plastic and Reconstructive Surgery and the Burn Center, Red Cross Hospital, Beverwijk, The Netherlands Department of Experimental Surgery, VU University Medical Center, Amsterdam, The Netherlands Department of Plastic, Reconstructive and Hand Surgery, VU University Medical Center, Amsterdam, The Netherlands.