3. Study grouping: location method.

Manual palpation	Electrical stimulation	Ultrasound	Not described
Baker 2002 Barwood 2000 Boyd 2001 Corry 1998 El‐Etribi 2004 Flett 1999 Ibrahim 2007 Kanovsky 2004 Koman 1994 Koman 2000 Love 2001 Moore 2008 Reddihough 2002 Tedroff 2010 Ubhi 2000	Bjornson 2007 Copeland 2014 Navarrete 2010 Scholtes 2006 Xu 2009	Çağlar 2019 Copeland 2014 Delgado 2016 Zhu 2016	Ackman 2005 Chaturvedi 2013 Hazneci 2006 Kay 2004 Mall 2006 Sutherland 1999 Steenbeek 2005