function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Babaeian, Esmaeil & Mašán, Peter & Halliday, Bruce', 8],
    ['Berlese, Antonio', 2],
    ['Hartini, Sri & Takaku, Gen', 1],
    ['Ishikawa, Kazuo', 7],
    ['Joharchi, Omid & Tolstikov, Andrei V. & Khaustov, Alexander A.', 3],
    ['JoharchiK, Omid & DökerK, Ismail & KhaustovK, Vladimir A.', 5],
    ['Keum, Eunsun & Jung, Chuleui & Joharchi, Omid', 2],
    ['Saboori, Alireza & Shirvani, Zeinab', 1],
    ['Takaku, Gen', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    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);