diff --git a/src/bilirubin_app.js b/src/bilirubin_app.js
index 3f905bd..44f7bea 100644
--- a/src/bilirubin_app.js
+++ b/src/bilirubin_app.js
@@ -47,6 +47,10 @@ function plotGraphData() {
 	} else if (guideline === 'nice') {
 		chart.data.datasets[0].data = [...Array(14*24).keys()].map((i) => i / 24).map((d) => ({x: d, y: nice_phototherapy_thresh(d, gestation)}));
 		chart.data.datasets[1].data = [...Array(14*24).keys()].map((i) => i / 24).map((d) => ({x: d, y: nice_exchange_thresh(d, gestation)}));
+	} else if (guideline === 'rwh') {
+		// NYI
+		chart.data.datasets[0].data = [];
+		chart.data.datasets[1].data = [];
 	} else {
 		throw new Error('Unexpected guideline');
 	}
@@ -176,6 +180,10 @@ function updateBilirubin() {
 	
 	if (guideline === 'nice') {
 		[d, result_text, text_colour, background_colour, accent_colour] = describeBilirubin(gestation, new Date(document.getElementById('time_birth').value), new Date(document.getElementById('time_measurement').value), bilirubin);
+	} else if (guideline === 'rwh') {
+		// NYI
+		resultDiv.className = 'hidden';
+		return;
 	} else {
 		throw new Error('Unexpected guideline');
 	}
diff --git a/src/index.html b/src/index.html
index 24ad3b7..4f88f65 100644
--- a/src/index.html
+++ b/src/index.html
@@ -33,6 +33,7 @@
 					<label for="guideline" class="text-sm font-medium text-gray-900 pt-1.5">Guideline:</label>
 					<select id="guideline" onchange="updateExtraQuestions();plotGraphData();updateBilirubin()" class="col-span-2 w-full rounded-md shadow-sm border-0 py-1.5 text-gray-900 ring-1 ring-inset ring-gray-300 focus:ring-2 focus:ring-inset focus:ring-indigo-600 text-sm">
 						<option value="nice" selected>National Institute for Health and Clinical Excellence (NICE)</option>
+						<option value="rwh">Royal Women's Hospital (RWH)</option>
 					</select>
 				</div>
 				<div class="sm:grid sm:grid-cols-3">