function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Baixeras, Joaquín & Karsholt, Ole', 3],
    ['Bidzilya, Oleksiy & Blackstein, Hans & Budashkin, Yuriy', 1],
    ['Dubatolov, V. V. & Zinchenko, V. K & Ustjuzhanin, P. Ya.', 2],
    ['Eiseman, Charles S. & Austin, Kyhl A. & Blyth, Julia A.', 1],
    ['Maharramova, Sheyda', 1],
    ['Maharramova, Sheyda & Ayberk, Hamit', 1],
    ['Mutanen, Marko & Aarvik, Leif & Landry, Jean-François', 2],
    ['Nasu, Yoshitsugu', 1],
    ['Pathania, Prakash C. & Das, Apurva & Chandra, Kailash', 5],
    ['Razowski, Józef & Landry, Bernard & Roque-Albelo, Lazaro', 1],
    ['Weidlich, Michael', 1],
    ['Wojtusiak, Janusz & Razowski, Józef', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    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);