function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Gupta, Sunil Kumar & Chandra, Kailash', 4],
    ['Hollier, John & Marshall, Judith & Legendre, Frédéric', 1],
    ['Hristov, Georgi H. & Chobanov, Dragan P.', 1],
    ['Meurgey, François & Ramage, Thibault', 1],
    ['Peris, David & Davis, Steven R. & Engel, Michael S.', 1],
    ['Qiu, Lu & Che, Yan-Li & Wang, Zong-Qing', 4],
    ['Seropian, Armen & Arsenashvili, Eka & Bulbulashvili, Natalia', 1],
    ['Temreshev, Izbasar I. & Makezhanov, Arman M.', 1],
    ['Walker, Francis', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);