function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bharti, Daizy & Kumar, Santosh & La Terza, Antonietta', 1],
    ['Buitkamp, Ulrich', 1],
    ['Chatterjee, Tapas & Dovgal, Igor', 1],
    ['Chatterjee, Tapas & Dovgal, Igor & Fernandez-Leborans, Gregorio', 1],
    ['Durán-Ramírez, Carlos Alberto & Dias, Roberto Júnio Pedroso', 18],
    ['Durán-Ramírez, Carlos Alberto & Mayén-Estrada, Rosaura', 2],
    ['Fan, Xinpeng & Yao, Shunli & Luo, Xiaotian & Dong, Tianyao', 2],
    ['Jung, Jae Ho & Park, Kyung Min & Min, Gi Sik', 5],
    ['Müller, O. F.', 2],
    ['Müller, Otto Friedrich', 36],
    ['Omar, Atef & Jung, Jae-Ho', 2],
    ['Paiva, Thiago Da Silva & Neto, Inácio Domingos Da Silva -', 2],
    ['Wang, Jingyi & Lyu, Zhao & Shao, Chen', 2],
    ['Wilbert, Norbert & Song, Weibo', 2],
    ['Yang, Caiting & Liu, An & Xu, Yusen & Xu, Yuan & Fan, Xinpeng', 4],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=92)',
    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);