function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['- Ślipińska, Grażyna Winiszewska', 2],
    ['Alvarez-Ortega, Sergio & Nguyen, Thi Anh Duong', 3],
    ['Asl, Ebrahim Zahedi & Niknam, Gholamreza & Jabbari, Habibeh', 3],
    ['Edm. Altherr, Aigle', 3],
    ['Gilarte, Patricia & Carreira, José Antonio', 2],
    ['Gusakov, Vladimir A. & Gagarin, Vladimir G.', 1],
    ['Holovachov, Oleksandr', 6],
    ['Khudhir, Manda & Hodda, Mike & Nicholas, Evelyn', 1],
    ['Nguyen, Thi Anh Duong & Abolafia, Joaquín & Bonkowski, Michael', 2],
    ['Peña-Santiago, R. & Álvarez-Ortega, S.', 3],
    ['Peña-Santiago, Reyes & Álvarez-Ortega, Sergio', 1],
    ['Poiras, Larisa', 1],
    ['Popovici, Iuliana', 1],
    ['Shahina, F. & Nasira, K. & Firoza, K. & Erum, Y. I.', 2],
    ['Zullini, Aldo', 2],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=34)',
    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);