function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cakenberghe, Victor Van & Tungaluna, Guy-Crispin Gembu', 1],
    ['Gawas, Sandesh M. & Kumar, Girish & Pannure, Arati', 1],
    ['Guinot, Danièle & Bakel, Barry Van', 1],
    ['Kreiter, Serge & Payet, Rose-My & Douin, Martial', 1],
    ['Myers, A. A. & Lowry, J. K.', 4],
    ['Peck, Stewart B. & Gnaspini, Pedro & Newton, Alfred F.', 5],
    ['Zahniser, James N. & Dietrich, Chris H.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);