Table 1 Primers used for sequencing of GDF5.

Exon	Forward	Reverse	DNA Polymerase	Annealing temp (°C)	Product length (bp)
1	CAGCATTACGCCATTCTTCCT	CCGGTGCCTCCCTTTG	Platinum Taq	63	613
1	GGGACCAGGCCAGGATTG	GGGCCAGATGCACACAGTG	Platinum Taq	63	637
2	GACTGGCTCCCTTGGT	GGAATGCGGTTAGAGGTGAGC	Platinum Taq	63	1688
2	ATGAGATTAAGGCCCGCTCTG	TGTCTCCCTGGACCTGTGC	Platinum Taq	60	692
2	GGAGGCGGGCGGGCTGCCCA	GCAGAGTCAATGAAGAGGAT	NEB Taq	55	680
2	GGCCCCCTTTTATCCACAAGT*	GTCGAACACCTCCCAGCCAG*

*Sequencing primer.