function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chertoprud, Mikhail V. & Palatov, Dmitry M.', 1],
    ['Krasheninnikov, A. B. & Vshivkova, K. A.', 1],
    ['Magoga, Giulia & Montagna, Matteo & Marziali, Laura', 2],
    ['Makarchenko, Eugenyi A. & Makarchenko, Marina A.', 10],
    ['Moubayed, J. & Baranov, Viktor A.', 1],
    ['Moubayed-Breil, Joel & Baranov, Viktor', 4],
    ['Tasdemir, Ayse & Akyildiz, Gurcay Kivanc', 2],
    ['Zerguine, Karima & Rossaro, Bruno', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=23)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);