function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Abdel-Dayem, Mahmoud S. & Fad, Hassan H. & El-Torkey, Ashraf M.', 2],
    ['Abdel-Dayem, Mahmoud S. & Rasool, Iftekhar & Elgharbawy, Ali A.', 1],
    ['Alekseev, Vitalii I. & Drotikova, Anna M. & Rozhina, Viktoria I.', 1],
    ['Aston, Paul', 1],
    ['Borges, Paulo A. V. & Gaspar, Clara', 2],
    ['Bousquet, Yves', 25],
    ['Hristovski, Slavčo & Guéorguiev, Borislav', 8],
    ['Jaeger, Bernd & M, Boris & W, David', 7],
    ['Kostova, Rumyana & Gueorguiev, Borislav', 16],
    ['Merene, Yeshitla & Lorenz, Wolfgang & Opgenoorth, Lars', 2],
    ['Pilon, Nicola & Cardarelli, Elisa & Bogliani, Giuseppe', 4],
    ['Serrano, Artur R. M. & Capela, Rúben A.', 4],
    ['Serrano, José', 4],
    ['W, David & Jaeger, Bernd', 2],
    ['Wrase, DW', 2],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=89)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);