function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bruzelius, Ragnar M.', 1],
    ['Chevreux, Édouard', 1],
    ['Coleman, Tapati Biswas Charles Oliver & Hendrycks, Ed A.', 3],
    ['Do Nascimento, Priscila S. & Serejo, Cristiana S.', 4],
    ['Hendrycks, EA & Conlan, KE', 6],
    ['Johansen, Per-Otto & Vader, Wim', 1],
    ['Lörz, Anne-Nina & Schnabel, Kareen', 2],
    ['Matsukami, Sachi & Nakano, Takafumi & Tomikawa, Ko', 1],
    ['Ortiz, M. & Winfield, I. & Ardisson, P. L.', 2],
    ['Tomikawa, Ko & Watanabe, Hiromi Kayama & Tanaka, Katsuhiko', 1],
    ['Walker, Alfred O.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    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);