function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Artois, Tom & Willems, Wim & De Roeck, Els & Jocqué, Merlijn', 2],
    ['Hochberg, Rick', 3],
    ['Hochberg, Rick & Cannon, Lester R. G.', 2],
    ['Houben, Albrecht M. & Monnens, Marlies & Proesmans, Willem', 15],
    ['Houben, Albrecht M. & Proesmans, Willem & Bert, Wim', 10],
    ['Houben, Albrecht M. & Schwank, Peter & Proesmans, Willem', 3],
    ['Houben, Albrecht M. & Steenkiste, Niels Van & Artois, Tom J.', 38],
    ['Huang, Wenjie & Xie, Xiang & Wang, Antai & Zhang, Yu', 2],
    ['Lunaschi, Lia I. & Álvarez, Victor Hugo Merlo', 1],
    ['Noreña, Carolina & Eitam, Avi & Blaustein, Leon', 16],
    ['Steenkiste, Niels Van & Tessens, Bart & Krznaric, Kathleen', 10],
    ['Van Steenkiste, Niels & Davison, Paul & Artois, Tom', 1],
    ['Willems, Wim R. & Artois, Tom J. & Vermin, Wouter A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=104)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);