function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['A., Gamal M. & Lashin & Abdelhaliem, Ekram M. & A., Gehad A.', 1],
    ['Cano, María J. & Jiménez, Juan A.', 8],
    ['Costa, Denise Pinheiro Da', 3],
    ['Gomes do Nascimento, Géssica Maria', 7],
    ['Hedderson, Terry A. & Cano, María J.', 2],
    ['Hsu, P. J.', 1],
    ['Jiménez, Juan A. & Cano, María J.', 1],
    ['Kaczmarek, Łukasz & Michalczyk, Łukasz & Mcinnes, Sandra J.', 2],
    ['Kiebacher, Thomas & Lüth, Michael & Lüth, Volker & Kučera, Jan', 10],
    ['Maier, Eva & Price, Michelle J.', 6],
    ['Mao, Lihui & Zuo, Qin & He, Si & Zhang, Li', 1],
    ['Oliveira, Regigláucia Rodrigues de', 9],
    ['Price, Michelle J.', 20],
    ['Reeb, Catherine & Letsara, Rokiman & Andriamiarisoa, Roger Lala', 3],
    ['Thouvenot, Louis & Müller, Frank', 4],
    ['Other (6)', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=84)',
    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);