function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Desutter-Grandcolas, Laure & Anso, Jérémy & Jourdan, Hervé', 1],
    ['Dong, Jiajia & Vicente, Natallia & Chintauan-Marquier, Ioana C.', 2],
    ['Hollier, John & Bruckner, Harald & Heads, Sam W.', 8],
    ['Ma, Libin & Zhang, Ya-Lin', 1],
    ['Robillard, Tony', 16],
    ['Robillard, Tony & Gorochov, Andrej V. & Poulain, Simon', 33],
    ['Robillard, Tony & Tan, Ming Kai & Japir, Razy', 2],
    ['Robillard, Tony & Yap, Sheryl', 3],
    ['Tan, Ming Kai & Abdul Wahab, Rodzay bin Haji', 1],
    ['Tan, Ming Kai & Japir, Razy & Chung, Arthur Y. C.', 3],
    ['Tan, Ming Kai & Kamaruddin, Khairul Nizam', 1],
    ['Tan, Ming Kai & Robillard, Tony', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=74)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);