function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allgén, C. A.', 2],
    ['Datta, Tridip Kumar & Al-Helal, Md. Abdullah', 15],
    ['Gagarin, Vladimir G. & Naumova, Tatyana V.', 3],
    ['Holovachov, Oleksandr', 6],
    ['Huang, Y. & Zhang, Z. N.', 3],
    ['Huang, Yong & Gao, Qun', 4],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 33],
    ['Liang, Huixin & Guo, Wen & Wang, Chunming', 4],
    ['Neres, Patrícia Fernandes & Santos, Paulo Jorge Parreira Dos', 4],
    ['Pinto, Taciana Kramer & Neres, Patricia Fernandes', 3],
    ['Semprucci, Federica & Sørensen, Martin V.', 3],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 8],
    ['Shimada, Daisuke & Tsujimoto, Megumu & Watanabe, Kentaro', 5],
    ['Venekey, Virag & Gheller, Paula F. & Kandratavicius, Noelia', 46],
    ['Árpád, Soós', 9],
    ['Other (11)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=162)',
    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);