title: Limitations of within-person study designs. In reply.
authors.affiliation: Department of Primary Care and Public Health Sciences, King's College London, 7th Floor, Capital House, 42 Weston Street, London SE1 3QD, United Kingdom.
authors.forename: Jennifer M
authors.initials: JM
authors.lastname: Nicholas
authors.forename: Andrew P
authors.initials: AP
authors.lastname: Grieve
authors.forename: Martin C
authors.initials: MC
authors.lastname: Gulliford
mesh_terms: D000927:Anticonvulsants / Q000009:adverse effects*; D015982:Bias; D003924:Diabetes Mellitus, Type 2 / Q000188:drug therapy*; D004827:Epilepsy / Q000188:drug therapy*; D005260:Female; D050723:Fractures, Bone / Q000139:chemically induced*; D006333:Heart Failure / Q000150:complications*; D006801:Humans; D007004:Hypoglycemic Agents / Q000009:adverse effects*; D008297:Male; D045162:Thiazolidinediones / Q000009:adverse effects*
chemical_list: D000927:Anticonvulsants; D007004:Hypoglycemic Agents; D045162:Thiazolidinediones