function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Aydin, Esra Elif & Lee, Won Je', 3],
    ['D\'Alessandro, Paola & Iannella, Mattia & Grobbelaar, Elizabeth', 5],
    ['Dissanayake, Asha J. & Jayawardena, Ruvishika S.', 1],
    ['Frank, Christa', 2],
    ['Guo, Mingxia & Xing, Lida & Wang, Bo & Zhang, Weiwei', 1],
    ['Hertach, Thomas & Nagel, Peter', 1],
    ['Lee, Won Je & Patterson, David J.', 2],
    ['Lee, Young June', 4],
    ['McDermott, John J.', 1],
    ['Prunera-Olivé, Joan & Vorontsova, Maria S. & Williams, Emma V.', 1],
    ['Valle, Laia Guardia & Stoianova, Desislava', 5]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);