function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chick, Andrew I. R.', 1],
    ['Escherich, K.', 1],
    ['Eusébio, Rita & Sendra, Alberto & Enghoff, Henrik', 2],
    ['Hazra, Ashis Kumar & Jana, Debanjan & Mandal, Guru Pada', 3],
    ['Irish, John', 1],
    ['Kahrarian, Morteza & Molero, Rafael & Gaju, Miquel', 4],
    ['Molero, Rafael & Tahami, Mohadeseh Sadat & Gaju, Miquel', 2],
    ['Sammet, Kaarel & Martin, Mati & Keskuela, Tonu & Kurina, Olavi', 1],
    ['Shimada, Megumi & Watanabe, Hiroki & Komine, Yukio', 1],
    ['Smith, Graeme B.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=17)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);